20493942 has 32 divisors (see below), whose sum is σ = 49600512. Its totient is φ = 5510784.

The previous prime is 20493919. The next prime is 20493953. The reversal of 20493942 is 24939402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13638 + ... + 15065.

It is an arithmetic number, because the mean of its divisors is an integer number (1550016).

Almost surely, 2^20493942 is an apocalyptic number.

20493942 is an abundant number, since it is smaller than the sum of its proper divisors (29106570).

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

20493942 is a wasteful number, since it uses less digits than its factorization.

20493942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28732.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20493942 is about 4527.0235254525. The cubic root of 20493942 is about 273.6582219808.

The spelling of 20493942 in words is "twenty million, four hundred ninety-three thousand, nine hundred forty-two".