28137293958 has 16 divisors (see below), whose sum is σ = 56325620736. Its totient is φ = 9370592520.

The previous prime is 28137293953. The next prime is 28137294001. The reversal of 28137293958 is 85939273182.

It is a happy number.

It is a super-2 number, since 2×28137293958² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28137293898 and 28137293907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28137293953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2119198 + ... + 2132433.

It is an arithmetic number, because the mean of its divisors is an integer number (3520351296).

Almost surely, 2^28137293958 is an apocalyptic number.

28137293958 is an abundant number, since it is smaller than the sum of its proper divisors (28188326778).

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

28137293958 is a wasteful number, since it uses less digits than its factorization.

28137293958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252739.

The product of its digits is 6531840, while the sum is 57.

The spelling of 28137293958 in words is "twenty-eight billion, one hundred thirty-seven million, two hundred ninety-three thousand, nine hundred fifty-eight".