28951156080 has 960 divisors, whose sum is σ = 128526773760. Its totient is φ = 5996229120.

The previous prime is 28951156061. The next prime is 28951156103. The reversal of 28951156080 is 8065115982.

It is a happy number.

28951156080 is a `hidden beast` number, since 2 + 8 + 9 + 5 + 1 + 1 + 560 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 94303287 + ... + 94303593.

It is an arithmetic number, because the mean of its divisors is an integer number (133882056).

Almost surely, 2^28951156080 is an apocalyptic number.

28951156080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28951156080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64263386880).

28951156080 is an abundant number, since it is smaller than the sum of its proper divisors (99575617680).

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

28951156080 is a wasteful number, since it uses less digits than its factorization.

28951156080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 28951156080 in words is "twenty-eight billion, nine hundred fifty-one million, one hundred fifty-six thousand, eighty".