28151400128 has 14 divisors (see below), whose sum is σ = 55862934756. Its totient is φ = 14075700032.

The previous prime is 28151400119. The next prime is 28151400133. The reversal of 28151400128 is 82100415182.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 28151400094 and 28151400103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219932750 + ... + 219932877.

Almost surely, 2^28151400128 is an apocalyptic number.

It is an amenable number.

28151400128 is a deficient number, since it is larger than the sum of its proper divisors (27711534628).

28151400128 is an equidigital number, since it uses as much as digits as its factorization.

28151400128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439865639 (or 439865629 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The spelling of 28151400128 in words is "twenty-eight billion, one hundred fifty-one million, four hundred thousand, one hundred twenty-eight".