28769974 has 4 divisors (see below), whose sum is σ = 43154964. Its totient is φ = 14384986.

The previous prime is 28769947. The next prime is 28769977. The reversal of 28769974 is 47996782.

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

It is a super-2 number, since 2×28769974² = 1655422807921352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28769977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7192492 + ... + 7192495.

It is an arithmetic number, because the mean of its divisors is an integer number (10788741).

Almost surely, 2^28769974 is an apocalyptic number.

28769974 is a deficient number, since it is larger than the sum of its proper divisors (14384990).

28769974 is a wasteful number, since it uses less digits than its factorization.

28769974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14384989.

The product of its digits is 1524096, while the sum is 52.

The square root of 28769974 is about 5363.7649090914. The cubic root of 28769974 is about 306.4172118098.

The spelling of 28769974 in words is "twenty-eight million, seven hundred sixty-nine thousand, nine hundred seventy-four".