28457974 has 4 divisors (see below), whose sum is σ = 42686964. Its totient is φ = 14228986.

The previous prime is 28457971. The next prime is 28457993. The reversal of 28457974 is 47975482.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28457971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7114492 + ... + 7114495.

It is an arithmetic number, because the mean of its divisors is an integer number (10671741).

Almost surely, 2^28457974 is an apocalyptic number.

28457974 is a deficient number, since it is larger than the sum of its proper divisors (14228990).

28457974 is a wasteful number, since it uses less digits than its factorization.

28457974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14228989.

The product of its digits is 564480, while the sum is 46.

The square root of 28457974 is about 5334.6015783749. The cubic root of 28457974 is about 305.3055220352.

The spelling of 28457974 in words is "twenty-eight million, four hundred fifty-seven thousand, nine hundred seventy-four".