19620912 has 20 divisors (see below), whose sum is σ = 50687480. Its totient is φ = 6540288.

The previous prime is 19620889. The next prime is 19620917. The reversal of 19620912 is 21902691.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19620912.

It is not an unprimeable number, because it can be changed into a prime (19620917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204337 + ... + 204432.

It is an arithmetic number, because the mean of its divisors is an integer number (2534374).

Almost surely, 2^19620912 is an apocalyptic number.

19620912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19620912 is an abundant number, since it is smaller than the sum of its proper divisors (31066568).

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

19620912 is a wasteful number, since it uses less digits than its factorization.

19620912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408780 (or 408774 counting only the distinct ones).

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

The square root of 19620912 is about 4429.5498642639. The cubic root of 19620912 is about 269.7158052215.

The spelling of 19620912 in words is "nineteen million, six hundred twenty thousand, nine hundred twelve".