28390297160 has 64 divisors (see below), whose sum is σ = 68267992320. Its totient is φ = 10588195840.

The previous prime is 28390297153. The next prime is 28390297171. The reversal of 28390297160 is 6179209382.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122336 + ... + 267855.

It is an arithmetic number, because the mean of its divisors is an integer number (1066687380).

Almost surely, 2^28390297160 is an apocalyptic number.

28390297160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28390297160 is an abundant number, since it is smaller than the sum of its proper divisors (39877695160).

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

28390297160 is a wasteful number, since it uses less digits than its factorization.

28390297160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390326 (or 390322 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 28390297160 in words is "twenty-eight billion, three hundred ninety million, two hundred ninety-seven thousand, one hundred sixty".