28761677 has 6 divisors (see below), whose sum is σ = 33457518. Its totient is φ = 24652824.

The previous prime is 28761673. The next prime is 28761701. The reversal of 28761677 is 77616782.

It can be written as a sum of positive squares in only one way, i.e., 28079401 + 682276 = 5299^2 + 826^2 .

It is not a de Polignac number, because 28761677 - 2² = 28761673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28761673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293438 + ... + 293535.

It is an arithmetic number, because the mean of its divisors is an integer number (5576253).

Almost surely, 2^28761677 is an apocalyptic number.

It is an amenable number.

28761677 is a deficient number, since it is larger than the sum of its proper divisors (4695841).

28761677 is an equidigital number, since it uses as much as digits as its factorization.

28761677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586987 (or 586980 counting only the distinct ones).

The product of its digits is 197568, while the sum is 44.

The square root of 28761677 is about 5362.9914227043. The cubic root of 28761677 is about 306.3877529946.

It can be divided in two parts, 2876167 and 7, that multiplied together give a square (20133169 = 4487²).

The spelling of 28761677 in words is "twenty-eight million, seven hundred sixty-one thousand, six hundred seventy-seven".