20535942 has 32 divisors (see below), whose sum is σ = 47365632. Its totient is φ = 5814144.

The previous prime is 20535929. The next prime is 20535947. The reversal of 20535942 is 24953502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535947) 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, 2583 + ... + 6909.

It is an arithmetic number, because the mean of its divisors is an integer number (1480176).

Almost surely, 2^20535942 is an apocalyptic number.

20535942 is an abundant number, since it is smaller than the sum of its proper divisors (26829690).

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

20535942 is a wasteful number, since it uses less digits than its factorization.

20535942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 20535942 is about 4531.6599607649. The cubic root of 20535942 is about 273.8450382053.

The spelling of 20535942 in words is "twenty million, five hundred thirty-five thousand, nine hundred forty-two".