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7988472 = 2332110951
BaseRepresentation
bin11110011110010011111000
3120000212010100
4132132103320
54021112342
6443115400
7124621002
oct36362370
916025110
107988472
114566948
122812b60
13186910b
1410bd372
15a7be4c
hex79e4f8

7988472 has 24 divisors (see below), whose sum is σ = 21635640. Its totient is φ = 2662800.

The previous prime is 7988459. The next prime is 7988473. The reversal of 7988472 is 2748897.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7988473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55404 + ... + 55547.

It is an arithmetic number, because the mean of its divisors is an integer number (901485).

Almost surely, 27988472 is an apocalyptic number.

7988472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7988472 is an abundant number, since it is smaller than the sum of its proper divisors (13647168).

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

7988472 is a wasteful number, since it uses less digits than its factorization.

7988472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110963 (or 110956 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 7988472 is about 2826.3885083265. The cubic root of 7988472 is about 199.9038871523.

The spelling of 7988472 in words is "seven million, nine hundred eighty-eight thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 110951 221902 332853 443804 665706 887608 998559 1331412 1997118 2662824 3994236 7988472