28277094261 has 96 divisors (see below), whose sum is σ = 44941467648. Its totient is φ = 15699277440.

The previous prime is 28277094257. The next prime is 28277094277. The reversal of 28277094261 is 16249077282.

It is not a de Polignac number, because 28277094261 - 2² = 28277094257 is a prime.

It is a super-2 number, since 2×28277094261² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28277094261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28277094661) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29241600 + ... + 29242566.

It is an arithmetic number, because the mean of its divisors is an integer number (468140288).

Almost surely, 2^28277094261 is an apocalyptic number.

It is an amenable number.

28277094261 is a deficient number, since it is larger than the sum of its proper divisors (16664373387).

28277094261 is a wasteful number, since it uses less digits than its factorization.

28277094261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 28277094261 in words is "twenty-eight billion, two hundred seventy-seven million, ninety-four thousand, two hundred sixty-one".