28407038224 has 20 divisors (see below), whose sum is σ = 55135382940. Its totient is φ = 14178552320.

The previous prime is 28407038221. The next prime is 28407038279. The reversal of 28407038224 is 42283070482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3939821824 + 24467216400 = 62768^2 + 156420^2 .

It is not an unprimeable number, because it can be changed into a prime (28407038221) 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, 1551037 + ... + 1569244.

It is an arithmetic number, because the mean of its divisors is an integer number (2756769147).

Almost surely, 2^28407038224 is an apocalyptic number.

It is an amenable number.

28407038224 is a deficient number, since it is larger than the sum of its proper divisors (26728344716).

28407038224 is a wasteful number, since it uses less digits than its factorization.

28407038224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120858 (or 3120852 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The spelling of 28407038224 in words is "twenty-eight billion, four hundred seven million, thirty-eight thousand, two hundred twenty-four".