28784189130 has 48 divisors (see below), whose sum is σ = 71382464352. Its totient is φ = 7428170400.

The previous prime is 28784189117. The next prime is 28784189143. The reversal of 28784189130 is 3198148782.

It is an interprime number because it is at equal distance from previous prime (28784189117) and next prime (28784189143).

It is a super-2 number, since 2×28784189130² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470376 + ... + 528035.

It is an arithmetic number, because the mean of its divisors is an integer number (1487134674).

Almost surely, 2^28784189130 is an apocalyptic number.

28784189130 is an abundant number, since it is smaller than the sum of its proper divisors (42598275222).

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

28784189130 is a wasteful number, since it uses less digits than its factorization.

28784189130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998483 (or 998452 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 51.

The spelling of 28784189130 in words is "twenty-eight billion, seven hundred eighty-four million, one hundred eighty-nine thousand, one hundred thirty".