28486458 has 256 divisors, whose sum is σ = 92897280. Its totient is φ = 6220800.

The previous prime is 28486433. The next prime is 28486501. The reversal of 28486458 is 85468482.

It is a super-2 number, since 2×28486458² = 1622956578771528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 918903 + ... + 918933.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

Almost surely, 2^28486458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28486458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46448640).

28486458 is an abundant number, since it is smaller than the sum of its proper divisors (64410822).

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

28486458 is a wasteful number, since it uses less digits than its factorization.

28486458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 84 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 28486458 is about 5337.2706508102. The cubic root of 28486458 is about 305.4073496481.

The spelling of 28486458 in words is "twenty-eight million, four hundred eighty-six thousand, four hundred fifty-eight".