Search a number
-
+
28800705492 = 22331367306169
BaseRepresentation
bin11010110100101001…
…111110001111010100
32202100011121102121000
4122310221332033110
5432440440033432
621121511023300
72036464646256
oct326451761724
982304542530
1028800705492
111123a27a349
1256b936ab30
13293ca89a90
14157305dcd6
15b386cc57c
hex6b4a7e3d4

28800705492 has 96 divisors (see below), whose sum is σ = 81612675200. Its totient is φ = 8729462016.

The previous prime is 28800705491. The next prime is 28800705497. The reversal of 28800705492 is 29450700882.

28800705492 is a `hidden beast` number, since 28 + 80 + 0 + 7 + 0 + 549 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28800705491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59017 + ... + 247152.

Almost surely, 228800705492 is an apocalyptic number.

It is an amenable number.

28800705492 is an abundant number, since it is smaller than the sum of its proper divisors (52811969708).

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

28800705492 is a wasteful number, since it uses less digits than its factorization.

28800705492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306262 (or 306254 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 28800705492 in words is "twenty-eight billion, eight hundred million, seven hundred five thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 67 78 108 117 134 156 201 234 268 351 402 468 603 702 804 871 1206 1404 1742 1809 2412 2613 3484 3618 5226 7236 7839 10452 15678 23517 31356 47034 94068 306169 612338 918507 1224676 1837014 2755521 3674028 3980197 5511042 7960394 8266563 11022084 11940591 15920788 16533126 20513323 23881182 33066252 35821773 41026646 47762364 61539969 71643546 82053292 107465319 123079938 143287092 184619907 214930638 246159876 266673199 369239814 429861276 533346398 553859721 738479628 800019597 1066692796 1107719442 1600039194 2215438884 2400058791 3200078388 4800117582 7200176373 9600235164 14400352746 28800705492