37978713 has 28 divisors (see below), whose sum is σ = 57972720. Its totient is φ = 24861816.

The previous prime is 37978711. The next prime is 37978747. The reversal of 37978713 is 31787973.

It is not a de Polignac number, because 37978713 - 2¹ = 37978711 is a prime.

It is a super-2 number, since 2×37978713² = 2884765282272738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (37978711) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42570 + ... + 43452.

Almost surely, 2^37978713 is an apocalyptic number.

It is an amenable number.

37978713 is a deficient number, since it is larger than the sum of its proper divisors (19994007).

37978713 is an frugal number, since it uses more digits than its factorization.

37978713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 945 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 37978713 is about 6162.6871574014. The cubic root of 37978713 is about 336.1347514360.

The spelling of 37978713 in words is "thirty-seven million, nine hundred seventy-eight thousand, seven hundred thirteen".