28107670437 has 60 divisors (see below), whose sum is σ = 52745386848. Its totient is φ = 14601351600.

The previous prime is 28107670399. The next prime is 28107670441. The reversal of 28107670437 is 73407670182.

28107670437 is a `hidden beast` number, since 2 + 81 + 0 + 76 + 70 + 437 = 666.

It is not a de Polignac number, because 28107670437 - 2¹⁶ = 28107604901 is a prime.

It is a super-2 number, since 2×28107670437² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28107670392 and 28107670401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28107670837) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 136239 + ... + 273452.

Almost surely, 2^28107670437 is an apocalyptic number.

28107670437 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28107670437 is a deficient number, since it is larger than the sum of its proper divisors (24637716411).

28107670437 is a wasteful number, since it uses less digits than its factorization.

28107670437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409732 (or 409712 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 28107670437 in words is "twenty-eight billion, one hundred seven million, six hundred seventy thousand, four hundred thirty-seven".