58309440 has 112 divisors (see below), whose sum is σ = 211604352. Its totient is φ = 13326336.

The previous prime is 58309411. The next prime is 58309451. The reversal of 58309440 is 4490385.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×58309440² = 6799981586227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2382 + ... + 11058.

Almost surely, 2^58309440 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 58309440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105802176).

58309440 is an abundant number, since it is smaller than the sum of its proper divisors (153294912).

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

58309440 is a wasteful number, since it uses less digits than its factorization.

58309440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704 (or 8694 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 58309440 is about 7636.0618122171. The cubic root of 58309440 is about 387.7748365888.

The spelling of 58309440 in words is "fifty-eight million, three hundred nine thousand, four hundred forty".