12137970 has 32 divisors (see below), whose sum is σ = 31372992. Its totient is φ = 2987712.

The previous prime is 12137969. The next prime is 12137981. The reversal of 12137970 is 7973121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15172 + ... + 15951.

It is an arithmetic number, because the mean of its divisors is an integer number (980406).

Almost surely, 2^12137970 is an apocalyptic number.

12137970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12137970 is an abundant number, since it is smaller than the sum of its proper divisors (19235022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12137970 is a wasteful number, since it uses less digits than its factorization.

12137970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31146.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 12137970 is about 3483.9589549821. The cubic root of 12137970 is about 229.8169305683.

The spelling of 12137970 in words is "twelve million, one hundred thirty-seven thousand, nine hundred seventy".