19940956 has 24 divisors (see below), whose sum is σ = 41982080. Its totient is φ = 8096112.

The previous prime is 19940941. The next prime is 19940957. The reversal of 19940956 is 65904991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18210 + ... + 19273.

Almost surely, 2^19940956 is an apocalyptic number.

It is an amenable number.

19940956 is an abundant number, since it is smaller than the sum of its proper divisors (22041124).

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

19940956 is a wasteful number, since it uses less digits than its factorization.

19940956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37513 (or 37511 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 19940956 is about 4465.5297558073. The cubic root of 19940956 is about 271.1743815772.

The spelling of 19940956 in words is "nineteen million, nine hundred forty thousand, nine hundred fifty-six".