Search a number
-
+
30687258804 = 22313119521157
BaseRepresentation
bin11100100101000110…
…100110100010110100
32221012122111021012220
4130211012212202310
51000321414240204
622033022242340
72134313252556
oct344506464264
987178437186
1030687258804
1112018180814
125b451263b0
132b80893007
1416b18274d6
15be91311d9
hex7251a68b4

30687258804 has 24 divisors (see below), whose sum is σ = 72150199968. Its totient is φ = 10151001120.

The previous prime is 30687258761. The next prime is 30687258809. The reversal of 30687258804 is 40885278603.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30687258809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9759007 + ... + 9762150.

It is an arithmetic number, because the mean of its divisors is an integer number (3006258332).

Almost surely, 230687258804 is an apocalyptic number.

It is an amenable number.

30687258804 is an abundant number, since it is smaller than the sum of its proper divisors (41462941164).

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

30687258804 is a wasteful number, since it uses less digits than its factorization.

30687258804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19521295 (or 19521293 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 30687258804 in words is "thirty billion, six hundred eighty-seven million, two hundred fifty-eight thousand, eight hundred four".

Divisors: 1 2 3 4 6 12 131 262 393 524 786 1572 19521157 39042314 58563471 78084628 117126942 234253884 2557271567 5114543134 7671814701 10229086268 15343629402 30687258804