39872030 has 16 divisors (see below), whose sum is σ = 78294384. Its totient is φ = 14498880.

The previous prime is 39872017. The next prime is 39872039. The reversal of 39872030 is 3027893.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39872039) 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 in 7 ways as a sum of consecutive naturals, for example, 181127 + ... + 181346.

It is an arithmetic number, because the mean of its divisors is an integer number (4893399).

Almost surely, 2^39872030 is an apocalyptic number.

39872030 is a deficient number, since it is larger than the sum of its proper divisors (38422354).

39872030 is a wasteful number, since it uses less digits than its factorization.

39872030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362491.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 39872030 is about 6314.4302989264. The cubic root of 39872030 is about 341.6300903406.

The spelling of 39872030 in words is "thirty-nine million, eight hundred seventy-two thousand, thirty".