28367474 has 4 divisors (see below), whose sum is σ = 42551214. Its totient is φ = 14183736.

The previous prime is 28367459. The next prime is 28367483. The reversal of 28367474 is 47476382.

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

It can be written as a sum of positive squares in only one way, i.e., 20205025 + 8162449 = 4495^2 + 2857^2 .

It is a super-2 number, since 2×28367474² = 1609427162281352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7091867 + ... + 7091870.

Almost surely, 2^28367474 is an apocalyptic number.

28367474 is a deficient number, since it is larger than the sum of its proper divisors (14183740).

28367474 is a wasteful number, since it uses less digits than its factorization.

28367474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14183739.

The product of its digits is 225792, while the sum is 41.

The square root of 28367474 is about 5326.1124659549. The cubic root of 28367474 is about 304.9815414790.

The spelling of 28367474 in words is "twenty-eight million, three hundred sixty-seven thousand, four hundred seventy-four".