19933040 has 40 divisors (see below), whose sum is σ = 46620528. Its totient is φ = 7925760.

The previous prime is 19933013. The next prime is 19933073. The reversal of 19933040 is 4033991.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 19932994 and 19933012.

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, 14795 + ... + 16085.

Almost surely, 2^19933040 is an apocalyptic number.

19933040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19933040 is an abundant number, since it is smaller than the sum of its proper divisors (26687488).

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

19933040 is a wasteful number, since it uses less digits than its factorization.

19933040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 19933040 is about 4464.6433228199. The cubic root of 19933040 is about 271.1384939545.

The spelling of 19933040 in words is "nineteen million, nine hundred thirty-three thousand, forty".