28371431490 has 16 divisors (see below), whose sum is σ = 68091435648. Its totient is φ = 7565715056.

The previous prime is 28371431479. The next prime is 28371431527. The reversal of 28371431490 is 9413417382.

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, 472857162 + ... + 472857221.

It is an arithmetic number, because the mean of its divisors is an integer number (4255714728).

Almost surely, 2^28371431490 is an apocalyptic number.

28371431490 is an abundant number, since it is smaller than the sum of its proper divisors (39720004158).

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

28371431490 is a wasteful number, since it uses less digits than its factorization.

28371431490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945714393.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 28371431490 in words is "twenty-eight billion, three hundred seventy-one million, four hundred thirty-one thousand, four hundred ninety".