28763974 has 4 divisors (see below), whose sum is σ = 43145964. Its totient is φ = 14381986.

The previous prime is 28763951. The next prime is 28763989. The reversal of 28763974 is 47936782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47936782 = 2 ⋅23968391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7190992 + ... + 7190995.

It is an arithmetic number, because the mean of its divisors is an integer number (10786491).

Almost surely, 2^28763974 is an apocalyptic number.

28763974 is a deficient number, since it is larger than the sum of its proper divisors (14381990).

28763974 is a wasteful number, since it uses less digits than its factorization.

28763974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14381989.

The product of its digits is 508032, while the sum is 46.

The square root of 28763974 is about 5363.2055712978. The cubic root of 28763974 is about 306.3959091478.

It can be divided in two parts, 2876397 and 4, that added together give a triangular number (2876401 = T₂₃₉₈).

The spelling of 28763974 in words is "twenty-eight million, seven hundred sixty-three thousand, nine hundred seventy-four".