22256512746 has 32 divisors (see below), whose sum is σ = 48051040128. Its totient is φ = 6831881280.

The previous prime is 22256512723. The next prime is 22256512757. The reversal of 22256512746 is 64721565222.

It is a super-2 number, since 2×22256512746² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22256512698 and 22256512707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306046 + ... + 371721.

It is an arithmetic number, because the mean of its divisors is an integer number (1501595004).

Almost surely, 2^22256512746 is an apocalyptic number.

22256512746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22256512746 is an abundant number, since it is smaller than the sum of its proper divisors (25794527382).

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

22256512746 is a wasteful number, since it uses less digits than its factorization.

22256512746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678206.

The product of its digits is 403200, while the sum is 42.

The spelling of 22256512746 in words is "twenty-two billion, two hundred fifty-six million, five hundred twelve thousand, seven hundred forty-six".