58281840 has 120 divisors (see below), whose sum is σ = 199088448. Its totient is φ = 15275520.

The previous prime is 58281827. The next prime is 58281857. The reversal of 58281840 is 4818285.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 58281795 and 58281804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43257 + ... + 44583.

Almost surely, 2^58281840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 58281840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99544224).

58281840 is an abundant number, since it is smaller than the sum of its proper divisors (140806608).

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

58281840 is a wasteful number, since it uses less digits than its factorization.

58281840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 58281840 is about 7634.2543840247. The cubic root of 58281840 is about 387.7136442412.

The spelling of 58281840 in words is "fifty-eight million, two hundred eighty-one thousand, eight hundred forty".