12938415 has 32 divisors (see below), whose sum is σ = 23846400. Its totient is φ = 5867904.

The previous prime is 12938389. The next prime is 12938461. The reversal of 12938415 is 51483921.

It is not a de Polignac number, because 12938415 - 2¹⁴ = 12922031 is a prime.

It is a congruent 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, 15232 + ... + 16058.

It is an arithmetic number, because the mean of its divisors is an integer number (745200).

Almost surely, 2^12938415 is an apocalyptic number.

12938415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12938415 is a deficient number, since it is larger than the sum of its proper divisors (10907985).

12938415 is a wasteful number, since it uses less digits than its factorization.

12938415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its digits is 8640, while the sum is 33.

The square root of 12938415 is about 3597.0008340283. Note that the first 3 decimals coincide. The cubic root of 12938415 is about 234.7615810401.

The spelling of 12938415 in words is "twelve million, nine hundred thirty-eight thousand, four hundred fifteen".