28881607450 has 48 divisors (see below), whose sum is σ = 55225590336. Its totient is φ = 11230819200.

The previous prime is 28881607423. The next prime is 28881607493. The reversal of 28881607450 is 5470618882.

It is a junction number, because it is equal to n+sod(n) for n = 28881607394 and 28881607403.

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, 555259 + ... + 605041.

It is an arithmetic number, because the mean of its divisors is an integer number (1150533132).

Almost surely, 2^28881607450 is an apocalyptic number.

28881607450 is a deficient number, since it is larger than the sum of its proper divisors (26343982886).

28881607450 is a wasteful number, since it uses less digits than its factorization.

28881607450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50119 (or 50114 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 28881607450 in words is "twenty-eight billion, eight hundred eighty-one million, six hundred seven thousand, four hundred fifty".