58405878 has 48 divisors (see below), whose sum is σ = 133975296. Its totient is φ = 18350640.

The previous prime is 58405873. The next prime is 58405883. The reversal of 58405878 is 87850485.

It is an interprime number because it is at equal distance from previous prime (58405873) and next prime (58405883).

It is a super-2 number, since 2×58405878² = 6822493169901768, 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 (58405871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28401 + ... + 30387.

It is an arithmetic number, because the mean of its divisors is an integer number (2791152).

Almost surely, 2^58405878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 58405878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66987648).

58405878 is an abundant number, since it is smaller than the sum of its proper divisors (75569418).

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

58405878 is a wasteful number, since it uses less digits than its factorization.

58405878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 58405878 is about 7642.3738458675. The cubic root of 58405878 is about 387.9884991454.

The spelling of 58405878 in words is "fifty-eight million, four hundred five thousand, eight hundred seventy-eight".