39706272 has 36 divisors (see below), whose sum is σ = 112915530. Its totient is φ = 13235328.

The previous prime is 39706259. The next prime is 39706301. The reversal of 39706272 is 27260793.

It can be written as a sum of positive squares in only one way, i.e., 39388176 + 318096 = 6276^2 + 564^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×39706272² = 3153176072275968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68647 + ... + 69222.

Almost surely, 2^39706272 is an apocalyptic number.

39706272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39706272 is an abundant number, since it is smaller than the sum of its proper divisors (73209258).

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

39706272 is a wasteful number, since it uses less digits than its factorization.

39706272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137885 (or 137874 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 39706272 is about 6301.2912962344. The cubic root of 39706272 is about 341.1560188808.

The spelling of 39706272 in words is "thirty-nine million, seven hundred six thousand, two hundred seventy-two".