28477234380 has 48 divisors (see below), whose sum is σ = 91127151360. Its totient is φ = 6509082048.

The previous prime is 28477234307. The next prime is 28477234403. The reversal of 28477234380 is 8343277482.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33901050 + ... + 33901889.

It is an arithmetic number, because the mean of its divisors is an integer number (1898482320).

Almost surely, 2^28477234380 is an apocalyptic number.

28477234380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28477234380 is an abundant number, since it is smaller than the sum of its proper divisors (62649916980).

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

28477234380 is a wasteful number, since it uses less digits than its factorization.

28477234380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67802958 (or 67802956 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 28477234380 in words is "twenty-eight billion, four hundred seventy-seven million, two hundred thirty-four thousand, three hundred eighty".