28331078450 has 48 divisors (see below), whose sum is σ = 53732828736. Its totient is φ = 11109758400.

The previous prime is 28331078359. The next prime is 28331078491. The reversal of 28331078450 is 5487013382.

It is a super-2 number, since 2×28331078450² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28331078398 and 28331078407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4053659 + ... + 4060641.

It is an arithmetic number, because the mean of its divisors is an integer number (1119433932).

Almost surely, 2^28331078450 is an apocalyptic number.

28331078450 is a deficient number, since it is larger than the sum of its proper divisors (25401750286).

28331078450 is a wasteful number, since it uses less digits than its factorization.

28331078450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579 (or 8574 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 28331078450 in words is "twenty-eight billion, three hundred thirty-one million, seventy-eight thousand, four hundred fifty".