28077131316 has 24 divisors (see below), whose sum is σ = 70552791904. Its totient is φ = 8639117280.

The previous prime is 28077131309. The next prime is 28077131333. The reversal of 28077131316 is 61313177082.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89990650 + ... + 89990961.

Almost surely, 2^28077131316 is an apocalyptic number.

28077131316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28077131316 is an abundant number, since it is smaller than the sum of its proper divisors (42475660588).

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

28077131316 is a wasteful number, since it uses less digits than its factorization.

28077131316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179981631 (or 179981629 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 28077131316 in words is "twenty-eight billion, seventy-seven million, one hundred thirty-one thousand, three hundred sixteen".