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989472560 = 24543128697
BaseRepresentation
bin111010111110100…
…010011100110000
32112221212102011212
4322332202130300
54011301110220
6242103455252
733343243436
oct7276423460
92487772155
10989472560
1146859341a
12237457528
13129cc252b
14955aad56
155bd020c5
hex3afa2730

989472560 has 40 divisors (see below), whose sum is σ = 2305941696. Its totient is φ = 394856960.

The previous prime is 989472559. The next prime is 989472637. The reversal of 989472560 is 65274989.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 989472499 and 989472508.

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, 20132 + ... + 48828.

Almost surely, 2989472560 is an apocalyptic number.

It is an amenable number.

989472560 is an abundant number, since it is smaller than the sum of its proper divisors (1316469136).

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

989472560 is a wasteful number, since it uses less digits than its factorization.

989472560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29141 (or 29135 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 989472560 is about 31455.8827566482. The cubic root of 989472560 is about 996.4784666936.

The spelling of 989472560 in words is "nine hundred eighty-nine million, four hundred seventy-two thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 431 862 1724 2155 3448 4310 6896 8620 17240 28697 34480 57394 114788 143485 229576 286970 459152 573940 1147880 2295760 12368407 24736814 49473628 61842035 98947256 123684070 197894512 247368140 494736280 989472560