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3972756 = 223331063
BaseRepresentation
bin1111001001111010010100
321110211121010
433021322110
52004112011
6221052220
745524244
oct17117224
97424533
103972756
112273877
1213b7070
13a91358
14755b24
155371a6
hex3c9e94

3972756 has 12 divisors (see below), whose sum is σ = 9269792. Its totient is φ = 1324248.

The previous prime is 3972751. The next prime is 3972757. The reversal of 3972756 is 6572793.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165520 + ... + 165543.

Almost surely, 23972756 is an apocalyptic number.

It is an amenable number.

3972756 is an abundant number, since it is smaller than the sum of its proper divisors (5297036).

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

3972756 is a wasteful number, since it uses less digits than its factorization.

3972756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331070 (or 331068 counting only the distinct ones).

The product of its digits is 79380, while the sum is 39.

The square root of 3972756 is about 1993.1773629058. The cubic root of 3972756 is about 158.3788909224.

The spelling of 3972756 in words is "three million, nine hundred seventy-two thousand, seven hundred fifty-six".

Divisors: 1 2 3 4 6 12 331063 662126 993189 1324252 1986378 3972756