28974894 has 64 divisors (see below), whose sum is σ = 67350528. Its totient is φ = 8236800.

The previous prime is 28974893. The next prime is 28974901. The reversal of 28974894 is 49847982.

It is a super-2 number, since 2×28974894² = 1679088964622472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28974893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55354 + ... + 55874.

It is an arithmetic number, because the mean of its divisors is an integer number (1052352).

Almost surely, 2^28974894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28974894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33675264).

28974894 is an abundant number, since it is smaller than the sum of its proper divisors (38375634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28974894 is a wasteful number, since it uses less digits than its factorization.

28974894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its digits is 1161216, while the sum is 51.

The square root of 28974894 is about 5382.8332688279. The cubic root of 28974894 is about 307.1429976769.

The spelling of 28974894 in words is "twenty-eight million, nine hundred seventy-four thousand, eight hundred ninety-four".