28591941 has 48 divisors (see below), whose sum is σ = 48427200. Its totient is φ = 14902272.

The previous prime is 28591939. The next prime is 28591949. The reversal of 28591941 is 14919582.

It is not a de Polignac number, because 28591941 - 2¹ = 28591939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28591941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28591949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80821 + ... + 81173.

It is an arithmetic number, because the mean of its divisors is an integer number (1008900).

Almost surely, 2^28591941 is an apocalyptic number.

28591941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28591941 is a deficient number, since it is larger than the sum of its proper divisors (19835259).

28591941 is a wasteful number, since it uses less digits than its factorization.

28591941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 411 counting only the distinct ones).

The product of its digits is 25920, while the sum is 39.

The square root of 28591941 is about 5347.1432559826. The cubic root of 28591941 is about 305.7838513710.

The spelling of 28591941 in words is "twenty-eight million, five hundred ninety-one thousand, nine hundred forty-one".