19733994 has 24 divisors (see below), whose sum is σ = 48865440. Its totient is φ = 5638248.

The previous prime is 19733941. The next prime is 19734037. The reversal of 19733994 is 49933791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78184 + ... + 78435.

It is an arithmetic number, because the mean of its divisors is an integer number (2036060).

Almost surely, 2^19733994 is an apocalyptic number.

19733994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19733994 is an abundant number, since it is smaller than the sum of its proper divisors (29131446).

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

19733994 is a wasteful number, since it uses less digits than its factorization.

19733994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156634 (or 156631 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 19733994 is about 4442.2960279567. The cubic root of 19733994 is about 270.2329676519.

It can be divided in two parts, 197 and 33994, that added together give a triangular number (34191 = T₂₆₁).

The spelling of 19733994 in words is "nineteen million, seven hundred thirty-three thousand, nine hundred ninety-four".