28691474 has 32 divisors (see below), whose sum is σ = 50409216. Its totient is φ = 11995200.

The previous prime is 28691417. The next prime is 28691483. The reversal of 28691474 is 47419682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145544 + ... + 145740.

It is an arithmetic number, because the mean of its divisors is an integer number (1575288).

Almost surely, 2^28691474 is an apocalyptic number.

28691474 is a deficient number, since it is larger than the sum of its proper divisors (21717742).

28691474 is a wasteful number, since it uses less digits than its factorization.

28691474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410.

The product of its digits is 96768, while the sum is 41.

The square root of 28691474 is about 5356.4422894306. The cubic root of 28691474 is about 306.1382675008.

The spelling of 28691474 in words is "twenty-eight million, six hundred ninety-one thousand, four hundred seventy-four".