28254817412 has 12 divisors (see below), whose sum is σ = 49731746316. Its totient is φ = 14045747040.

The previous prime is 28254817397. The next prime is 28254817417. The reversal of 28254817412 is 21471845282.

It can be written as a sum of positive squares in 2 ways, for example, as 24776648836 + 3478168576 = 157406^2 + 58976^2 .

It is a super-3 number, since 3×28254817412³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28254817417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20414639 + ... + 20416022.

It is an arithmetic number, because the mean of its divisors is an integer number (4144312193).

Almost surely, 2^28254817412 is an apocalyptic number.

It is an amenable number.

28254817412 is a deficient number, since it is larger than the sum of its proper divisors (21476928904).

28254817412 is a wasteful number, since it uses less digits than its factorization.

28254817412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40830838 (or 40830836 counting only the distinct ones).

The product of its digits is 286720, while the sum is 44.

The spelling of 28254817412 in words is "twenty-eight billion, two hundred fifty-four million, eight hundred seventeen thousand, four hundred twelve".