28990152834 has 16 divisors (see below), whose sum is σ = 58200766272. Its totient is φ = 9626640848.

The previous prime is 28990152797. The next prime is 28990152869. The reversal of 28990152834 is 43825109982.

It is a super-2 number, since 2×28990152834² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9184149 + ... + 9187304.

It is an arithmetic number, because the mean of its divisors is an integer number (3637547892).

Almost surely, 2^28990152834 is an apocalyptic number.

28990152834 is an abundant number, since it is smaller than the sum of its proper divisors (29210613438).

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

28990152834 is a wasteful number, since it uses less digits than its factorization.

28990152834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18371721.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 28990152834 in words is "twenty-eight billion, nine hundred ninety million, one hundred fifty-two thousand, eight hundred thirty-four".