28941558 has 16 divisors (see below), whose sum is σ = 58446336. Its totient is φ = 9553320.

The previous prime is 28941557. The next prime is 28941589. The reversal of 28941558 is 85514982.

It is a happy number.

It is a super-2 number, since 2×28941558² = 1675227558934728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28941553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22798 + ... + 24033.

It is an arithmetic number, because the mean of its divisors is an integer number (3652896).

Almost surely, 2^28941558 is an apocalyptic number.

28941558 is an abundant number, since it is smaller than the sum of its proper divisors (29504778).

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

28941558 is a wasteful number, since it uses less digits than its factorization.

28941558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46939.

The product of its digits is 115200, while the sum is 42.

The square root of 28941558 is about 5379.7358671221. The cubic root of 28941558 is about 307.0251617767.

The spelling of 28941558 in words is "twenty-eight million, nine hundred forty-one thousand, five hundred fifty-eight".