20087224 has 8 divisors (see below), whose sum is σ = 37663560. Its totient is φ = 10043608.

The previous prime is 20087213. The next prime is 20087231. The reversal of 20087224 is 42278002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255444 + ... + 1255459.

It is an arithmetic number, because the mean of its divisors is an integer number (4707945).

Almost surely, 2^20087224 is an apocalyptic number.

It is an amenable number.

20087224 is a deficient number, since it is larger than the sum of its proper divisors (17576336).

20087224 is a wasteful number, since it uses less digits than its factorization.

20087224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510909 (or 2510905 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 20087224 is about 4481.8772852455. The cubic root of 20087224 is about 271.8357933334.

The spelling of 20087224 in words is "twenty million, eighty-seven thousand, two hundred twenty-four".