38720672 has 12 divisors (see below), whose sum is σ = 76231386. Its totient is φ = 19360320.

The previous prime is 38720657. The next prime is 38720677. The reversal of 38720672 is 27602783.

It can be written as a sum of positive squares in only one way, i.e., 25441936 + 13278736 = 5044^2 + 3644^2 .

It is not an unprimeable number, because it can be changed into a prime (38720677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604979 + ... + 605042.

Almost surely, 2^38720672 is an apocalyptic number.

38720672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38720672 is a deficient number, since it is larger than the sum of its proper divisors (37510714).

38720672 is a wasteful number, since it uses less digits than its factorization.

38720672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210031 (or 1210023 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 38720672 is about 6222.5936714524. The cubic root of 38720672 is about 338.3095794648.

The spelling of 38720672 in words is "thirty-eight million, seven hundred twenty thousand, six hundred seventy-two".