19733990 has 16 divisors (see below), whose sum is σ = 36348048. Its totient is φ = 7709856.

The previous prime is 19733941. The next prime is 19734037. The reversal of 19733990 is 9933791.

It is a super-2 number, since 2×19733990² = 778860722640200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22517 + ... + 23376.

It is an arithmetic number, because the mean of its divisors is an integer number (2271753).

Almost surely, 2^19733990 is an apocalyptic number.

19733990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19733990 is a deficient number, since it is larger than the sum of its proper divisors (16614058).

19733990 is a wasteful number, since it uses less digits than its factorization.

19733990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45943.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 19733990 is about 4442.2955777391. The cubic root of 19733990 is about 270.2329493935.

The spelling of 19733990 in words is "nineteen million, seven hundred thirty-three thousand, nine hundred ninety".