20927304 has 24 divisors (see below), whose sum is σ = 56678310. Its totient is φ = 6975744.

The previous prime is 20927293. The next prime is 20927317. The reversal of 20927304 is 40372902.

It can be written as a sum of positive squares in only one way, i.e., 14424804 + 6502500 = 3798^2 + 2550^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×20927304³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145257 + ... + 145400.

Almost surely, 2^20927304 is an apocalyptic number.

20927304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20927304 is an abundant number, since it is smaller than the sum of its proper divisors (35751006).

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

20927304 is a wasteful number, since it uses less digits than its factorization.

20927304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290669 (or 290662 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20927304 is about 4574.6370347821. The cubic root of 20927304 is about 275.5736960058.

The spelling of 20927304 in words is "twenty million, nine hundred twenty-seven thousand, three hundred four".