28374277 has 4 divisors (see below), whose sum is σ = 29867680. Its totient is φ = 26880876.

The previous prime is 28374271. The next prime is 28374287. The reversal of 28374277 is 77247382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28374277 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 (28374271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746673 + ... + 746710.

It is an arithmetic number, because the mean of its divisors is an integer number (7466920).

Almost surely, 2^28374277 is an apocalyptic number.

It is an amenable number.

28374277 is a deficient number, since it is larger than the sum of its proper divisors (1493403).

28374277 is a wasteful number, since it uses less digits than its factorization.

28374277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493402.

The product of its digits is 131712, while the sum is 40.

The square root of 28374277 is about 5326.7510735907. The cubic root of 28374277 is about 305.0059194408.

The spelling of 28374277 in words is "twenty-eight million, three hundred seventy-four thousand, two hundred seventy-seven".