28612377 has 12 divisors (see below), whose sum is σ = 43760340. Its totient is φ = 17952768.

The previous prime is 28612369. The next prime is 28612379. The reversal of 28612377 is 77321682.

28612377 is a `hidden beast` number, since 2 + 8 + 612 + 37 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22382361 + 6230016 = 4731^2 + 2496^2 .

It is not a de Polignac number, because 28612377 - 2³ = 28612369 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28612379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93352 + ... + 93657.

It is an arithmetic number, because the mean of its divisors is an integer number (3646695).

Almost surely, 2^28612377 is an apocalyptic number.

It is an amenable number.

28612377 is a deficient number, since it is larger than the sum of its proper divisors (15147963).

28612377 is a wasteful number, since it uses less digits than its factorization.

28612377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187032 (or 187029 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 28612377 is about 5349.0538415686. The cubic root of 28612377 is about 305.8566867032.

The spelling of 28612377 in words is "twenty-eight million, six hundred twelve thousand, three hundred seventy-seven".