28978294 has 16 divisors (see below), whose sum is σ = 44394480. Its totient is φ = 14182560.

The previous prime is 28978283. The next prime is 28978307. The reversal of 28978294 is 49287982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32377 + ... + 33259.

It is an arithmetic number, because the mean of its divisors is an integer number (2774655).

Almost surely, 2^28978294 is an apocalyptic number.

28978294 is a deficient number, since it is larger than the sum of its proper divisors (15416186).

28978294 is a wasteful number, since it uses less digits than its factorization.

28978294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its digits is 580608, while the sum is 49.

The square root of 28978294 is about 5383.1490783741. The cubic root of 28978294 is about 307.1550108972.

The spelling of 28978294 in words is "twenty-eight million, nine hundred seventy-eight thousand, two hundred ninety-four".