28226957424 has 80 divisors (see below), whose sum is σ = 74097245568. Its totient is φ = 9257377536.

The previous prime is 28226957387. The next prime is 28226957477. The reversal of 28226957424 is 42475962282.

It is a super-2 number, since 2×28226957424² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 2912074 + ... + 2921750.

Almost surely, 2^28226957424 is an apocalyptic number.

28226957424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28226957424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37048622784).

28226957424 is an abundant number, since it is smaller than the sum of its proper divisors (45870288144).

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

28226957424 is a wasteful number, since it uses less digits than its factorization.

28226957424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10656 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The spelling of 28226957424 in words is "twenty-eight billion, two hundred twenty-six million, nine hundred fifty-seven thousand, four hundred twenty-four".