28474077 has 4 divisors (see below), whose sum is σ = 37965440. Its totient is φ = 18982716.

The previous prime is 28474013. The next prime is 28474087. The reversal of 28474077 is 77047482.

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 not a de Polignac number, because 28474077 - 2⁶ = 28474013 is a prime.

It is a super-2 number, since 2×28474077² = 1621546122003858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28474087) 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, 4745677 + ... + 4745682.

It is an arithmetic number, because the mean of its divisors is an integer number (9491360).

Almost surely, 2^28474077 is an apocalyptic number.

It is an amenable number.

28474077 is a deficient number, since it is larger than the sum of its proper divisors (9491363).

28474077 is an equidigital number, since it uses as much as digits as its factorization.

28474077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491362.

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 28474077 is about 5336.1106622708. The cubic root of 28474077 is about 305.3630970850.

The spelling of 28474077 in words is "twenty-eight million, four hundred seventy-four thousand, seventy-seven".