20072256 has 28 divisors (see below), whose sum is σ = 53108352. Its totient is φ = 6690688.

The previous prime is 20072209. The next prime is 20072267. The reversal of 20072256 is 65227002.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 52080 + ... + 52463.

Almost surely, 2^20072256 is an apocalyptic number.

It is an amenable number.

20072256 is an abundant number, since it is smaller than the sum of its proper divisors (33036096).

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

20072256 is a wasteful number, since it uses less digits than its factorization.

20072256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104558 (or 104548 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20072256 is about 4480.2071380685. The cubic root of 20072256 is about 271.7682570526.

Adding to 20072256 its reverse (65227002), we get a palindrome (85299258).

The spelling of 20072256 in words is "twenty million, seventy-two thousand, two hundred fifty-six".