28317737438 has 16 divisors (see below), whose sum is σ = 42904492560. Its totient is φ = 14016288000.

The previous prime is 28317737429. The next prime is 28317737473. The reversal of 28317737438 is 83473771382.

It is a super-3 number, since 3×28317737438³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28317737438.

It is a congruent number.

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, 2055758 + ... + 2069486.

It is an arithmetic number, because the mean of its divisors is an integer number (2681530785).

Almost surely, 2^28317737438 is an apocalyptic number.

28317737438 is a deficient number, since it is larger than the sum of its proper divisors (14586755122).

28317737438 is a wasteful number, since it uses less digits than its factorization.

28317737438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24043.

The product of its digits is 4741632, while the sum is 53.

The spelling of 28317737438 in words is "twenty-eight billion, three hundred seventeen million, seven hundred thirty-seven thousand, four hundred thirty-eight".