38998015 has 32 divisors (see below), whose sum is σ = 55332864. Its totient is φ = 25833600.

The previous prime is 38997991. The next prime is 38998021. The reversal of 38998015 is 51089983.

It is not a de Polignac number, because 38998015 - 2⁷ = 38997887 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248317 + ... + 248473.

It is an arithmetic number, because the mean of its divisors is an integer number (1729152).

Almost surely, 2^38998015 is an apocalyptic number.

38998015 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38998015 is a deficient number, since it is larger than the sum of its proper divisors (16334849).

38998015 is a wasteful number, since it uses less digits than its factorization.

38998015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 38998015 is about 6244.8390691834. The cubic root of 38998015 is about 339.1153907382.

The spelling of 38998015 in words is "thirty-eight million, nine hundred ninety-eight thousand, fifteen".