28437028438 has 64 divisors (see below), whose sum is σ = 54369165312. Its totient is φ = 10851459840.

The previous prime is 28437028393. The next prime is 28437028439. The reversal of 28437028438 is 83482073482.

It is a junction number, because it is equal to n+sod(n) for n = 28437028391 and 28437028400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28437028439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1757895 + ... + 1773997.

It is an arithmetic number, because the mean of its divisors is an integer number (849518208).

Almost surely, 2^28437028438 is an apocalyptic number.

28437028438 is a deficient number, since it is larger than the sum of its proper divisors (25932136874).

28437028438 is a wasteful number, since it uses less digits than its factorization.

28437028438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469.

The product of its (nonzero) digits is 2064384, while the sum is 49.

The spelling of 28437028438 in words is "twenty-eight billion, four hundred thirty-seven million, twenty-eight thousand, four hundred thirty-eight".