28474787 has 16 divisors (see below), whose sum is σ = 33505920. Its totient is φ = 23918400.

The previous prime is 28474777. The next prime is 28474807. The reversal of 28474787 is 78747482.

It is not a de Polignac number, because 28474787 - 2²⁰ = 27426211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28474717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6908 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (2094120).

Almost surely, 2^28474787 is an apocalyptic number.

28474787 is a deficient number, since it is larger than the sum of its proper divisors (5031133).

28474787 is a wasteful number, since it uses less digits than its factorization.

28474787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394.

The product of its digits is 702464, while the sum is 47.

The square root of 28474787 is about 5336.1771897118. The cubic root of 28474787 is about 305.3656351362.

The spelling of 28474787 in words is "twenty-eight million, four hundred seventy-four thousand, seven hundred eighty-seven".