28227974 has 8 divisors (see below), whose sum is σ = 42753360. Its totient is φ = 13976856.

The previous prime is 28227961. The next prime is 28227989. The reversal of 28227974 is 47972282.

28227974 = 2655² + 2656² + ... + 2658².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28227974² = 1593637032289352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68309 + ... + 68720.

It is an arithmetic number, because the mean of its divisors is an integer number (5344170).

Almost surely, 2^28227974 is an apocalyptic number.

28227974 is a deficient number, since it is larger than the sum of its proper divisors (14525386).

28227974 is a wasteful number, since it uses less digits than its factorization.

28227974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137134.

The product of its digits is 112896, while the sum is 41.

The square root of 28227974 is about 5313.0004705439. Note that the first 3 decimals coincide. The cubic root of 28227974 is about 304.4807936168.

The spelling of 28227974 in words is "twenty-eight million, two hundred twenty-seven thousand, nine hundred seventy-four".