20542304 has 24 divisors (see below), whose sum is σ = 41385960. Its totient is φ = 10031616.

The previous prime is 20542283. The next prime is 20542321. The reversal of 20542304 is 40324502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6089 + ... + 8840.

It is an arithmetic number, because the mean of its divisors is an integer number (1724415).

Almost surely, 2^20542304 is an apocalyptic number.

It is an amenable number.

20542304 is an abundant number, since it is smaller than the sum of its proper divisors (20843656).

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

20542304 is a wasteful number, since it uses less digits than its factorization.

20542304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14982 (or 14974 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20542304 is about 4532.3618566924. The cubic root of 20542304 is about 273.8733141950.

Adding to 20542304 its reverse (40324502), we get a palindrome (60866806).

The spelling of 20542304 in words is "twenty million, five hundred forty-two thousand, three hundred four".