22072456 has 32 divisors (see below), whose sum is σ = 49357440. Its totient is φ = 9047808.

The previous prime is 22072441. The next prime is 22072487. The reversal of 22072456 is 65427022.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7281 + ... + 9856.

It is an arithmetic number, because the mean of its divisors is an integer number (1542420).

Almost surely, 2^22072456 is an apocalyptic number.

It is an amenable number.

22072456 is an abundant number, since it is smaller than the sum of its proper divisors (27284984).

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

22072456 is a wasteful number, since it uses less digits than its factorization.

22072456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17173 (or 17169 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 22072456 is about 4698.1332463011. The cubic root of 22072456 is about 280.5112089513.

Adding to 22072456 its reverse (65427022), we get a palindrome (87499478).

It can be divided in two parts, 220724 and 56, that added together give a triangular number (220780 = T₆₆₄).

The spelling of 22072456 in words is "twenty-two million, seventy-two thousand, four hundred fifty-six".