38721995 has 32 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 26826624.

The previous prime is 38721983. The next prime is 38722027. The reversal of 38721995 is 59912783.

It is a cyclic number.

It is not a de Polignac number, because 38721995 - 2⁴ = 38721979 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87986 + ... + 88424.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^38721995 is an apocalyptic number.

38721995 is a deficient number, since it is larger than the sum of its proper divisors (14500405).

38721995 is a wasteful number, since it uses less digits than its factorization.

38721995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its digits is 136080, while the sum is 44.

The square root of 38721995 is about 6222.6999766982. The cubic root of 38721995 is about 338.3134325184.

The spelling of 38721995 in words is "thirty-eight million, seven hundred twenty-one thousand, nine hundred ninety-five".