20732442 has 8 divisors (see below), whose sum is σ = 41464896. Its totient is φ = 6910812.

The previous prime is 20732441. The next prime is 20732471. The reversal of 20732442 is 24423702.

It is a sphenic number, since it is the product of 3 distinct primes.

20732442 is an admirable number.

It is a super-3 number, since 3×20732442³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20732441) 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, 1727698 + ... + 1727709.

It is an arithmetic number, because the mean of its divisors is an integer number (5183112).

Almost surely, 2^20732442 is an apocalyptic number.

20732442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20732442 is a wasteful number, since it uses less digits than its factorization.

20732442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455412.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20732442 is about 4553.2891408300. The cubic root of 20732442 is about 274.7157039912.

The spelling of 20732442 in words is "twenty million, seven hundred thirty-two thousand, four hundred forty-two".