19956432 has 20 divisors (see below), whose sum is σ = 51554240. Its totient is φ = 6652128.

The previous prime is 19956407. The next prime is 19956439. The reversal of 19956432 is 23465991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19956439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207832 + ... + 207927.

It is an arithmetic number, because the mean of its divisors is an integer number (2577712).

Almost surely, 2^19956432 is an apocalyptic number.

19956432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19956432 is an abundant number, since it is smaller than the sum of its proper divisors (31597808).

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

19956432 is a wasteful number, since it uses less digits than its factorization.

19956432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415770 (or 415764 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 19956432 is about 4467.2622488500. The cubic root of 19956432 is about 271.2445154518.

The spelling of 19956432 in words is "nineteen million, nine hundred fifty-six thousand, four hundred thirty-two".