19776012 has 12 divisors (see below), whose sum is σ = 46144056. Its totient is φ = 6592000.

The previous prime is 19775989. The next prime is 19776037. The reversal of 19776012 is 21067791.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823989 + ... + 824012.

It is an arithmetic number, because the mean of its divisors is an integer number (3845338).

Almost surely, 2^19776012 is an apocalyptic number.

19776012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19776012 is an abundant number, since it is smaller than the sum of its proper divisors (26368044).

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

19776012 is a wasteful number, since it uses less digits than its factorization.

19776012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648008 (or 1648006 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 19776012 is about 4447.0228243174. The cubic root of 19776012 is about 270.4246267675.

The spelling of 19776012 in words is "nineteen million, seven hundred seventy-six thousand, twelve".