28934115870 has 32 divisors (see below), whose sum is σ = 75754776960. Its totient is φ = 7014331040.

The previous prime is 28934115869. The next prime is 28934115871. The reversal of 28934115870 is 7851143982.

It is an interprime number because it is at equal distance from previous prime (28934115869) and next prime (28934115871).

It is a super-2 number, since 2×28934115870² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934115871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43839240 + ... + 43839899.

It is an arithmetic number, because the mean of its divisors is an integer number (2367336780).

Almost surely, 2^28934115870 is an apocalyptic number.

28934115870 is an abundant number, since it is smaller than the sum of its proper divisors (46820661090).

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

28934115870 is a wasteful number, since it uses less digits than its factorization.

28934115870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87679160.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 28934115870 in words is "twenty-eight billion, nine hundred thirty-four million, one hundred fifteen thousand, eight hundred seventy".