19023812 has 12 divisors (see below), whose sum is σ = 33384960. Its totient is φ = 9485256.

The previous prime is 19023787. The next prime is 19023821. The reversal of 19023812 is 21832091.

It is a super-2 number, since 2×19023812² = 723810846022688, which contains 22 as substring.

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, 5012 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^19023812 is an apocalyptic number.

It is an amenable number.

19023812 is a deficient number, since it is larger than the sum of its proper divisors (14361148).

19023812 is a wasteful number, since it uses less digits than its factorization.

19023812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13330 (or 13328 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 19023812 is about 4361.6295120058. The cubic root of 19023812 is about 266.9515919852.

The spelling of 19023812 in words is "nineteen million, twenty-three thousand, eight hundred twelve".