28730992464 has 160 divisors (see below), whose sum is σ = 84769098240. Its totient is φ = 9312496128.

The previous prime is 28730992439. The next prime is 28730992469. The reversal of 28730992464 is 46429903782.

28730992464 is a `hidden beast` number, since 28 + 73 + 0 + 9 + 92 + 464 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 28730992464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730992469) 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, 3183222 + ... + 3192234.

It is an arithmetic number, because the mean of its divisors is an integer number (529806864).

Almost surely, 2^28730992464 is an apocalyptic number.

28730992464 is a gapful number since it is divisible by the number (24) 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 28730992464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42384549120).

28730992464 is an abundant number, since it is smaller than the sum of its proper divisors (56038105776).

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

28730992464 is a wasteful number, since it uses less digits than its factorization.

28730992464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9234 (or 9222 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 28730992464 in words is "twenty-eight billion, seven hundred thirty million, nine hundred ninety-two thousand, four hundred sixty-four".