Search a number
-
+
3987125248 = 21097137293
BaseRepresentation
bin1110110110100110…
…1011010000000000
3101021212110221121111
43231221223100000
531131201001443
61455345533104
7200543001601
oct35551532000
911255427544
103987125248
1117666a0237
12933344194
134b7064512
1429b761da8
1518508069d
hexeda6b400

3987125248 has 88 divisors (see below), whose sum is σ = 8138986632. Its totient is φ = 1951924224.

The previous prime is 3987125227. The next prime is 3987125251. The reversal of 3987125248 is 8425217893.

It can be written as a sum of positive squares in 4 ways, for example, as 1602561024 + 2384564224 = 40032^2 + 48832^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13607790 + ... + 13608082.

Almost surely, 23987125248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3987125248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4069493316).

3987125248 is an abundant number, since it is smaller than the sum of its proper divisors (4151861384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3987125248 is a wasteful number, since it uses less digits than its factorization.

3987125248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 529 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 3987125248 is about 63143.6873171024. The cubic root of 3987125248 is about 1585.6961051881.

The spelling of 3987125248 in words is "three billion, nine hundred eighty-seven million, one hundred twenty-five thousand, two hundred forty-eight".

Divisors: 1 2 4 8 16 32 64 97 128 137 194 256 274 293 388 512 548 586 776 1024 1096 1172 1552 2192 2344 3104 4384 4688 6208 8768 9376 12416 13289 17536 18752 24832 26578 28421 35072 37504 40141 49664 53156 56842 70144 75008 80282 99328 106312 113684 140288 150016 160564 212624 227368 300032 321128 425248 454736 642256 850496 909472 1284512 1700992 1818944 2569024 3401984 3637888 3893677 5138048 6803968 7275776 7787354 10276096 13607936 14551552 15574708 20552192 29103104 31149416 41104384 62298832 124597664 249195328 498390656 996781312 1993562624 3987125248