19942956 has 48 divisors (see below), whose sum is σ = 56407680. Its totient is φ = 6042960.

The previous prime is 19942939. The next prime is 19942957. The reversal of 19942956 is 65924991.

It is not an unprimeable number, because it can be changed into a prime (19942957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7206 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (1175160).

Almost surely, 2^19942956 is an apocalyptic number.

It is an amenable number.

19942956 is an abundant number, since it is smaller than the sum of its proper divisors (36464724).

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

19942956 is a wasteful number, since it uses less digits than its factorization.

19942956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16811 (or 16803 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 19942956 is about 4465.7536877889. The cubic root of 19942956 is about 271.1834471846.

It can be divided in two parts, 1994 and 2956, that added together give a triangular number (4950 = T₉₉).

The spelling of 19942956 in words is "nineteen million, nine hundred forty-two thousand, nine hundred fifty-six".