12619920 has 40 divisors (see below), whose sum is σ = 39122496. Its totient is φ = 3365248.

The previous prime is 12619897. The next prime is 12619921. The reversal of 12619920 is 2991621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is not an unprimeable number, because it can be changed into a prime (12619921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26052 + ... + 26531.

Almost surely, 2^12619920 is an apocalyptic number.

12619920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12619920 is an abundant number, since it is smaller than the sum of its proper divisors (26502576).

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

12619920 is a wasteful number, since it uses less digits than its factorization.

12619920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52599 (or 52593 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 12619920 is about 3552.4526738579. The cubic root of 12619920 is about 232.8192400343.

It can be divided in two parts, 126 and 19920, that multiplied together give a triangular number (2509920 = T₂₂₄₀).

The spelling of 12619920 in words is "twelve million, six hundred nineteen thousand, nine hundred twenty".