58231440 has 80 divisors (see below), whose sum is σ = 200582400. Its totient is φ = 15527808.

The previous prime is 58231429. The next prime is 58231441. The reversal of 58231440 is 4413285.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58231441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11320 + ... + 15639.

It is an arithmetic number, because the mean of its divisors is an integer number (2507280).

Almost surely, 2^58231440 is an apocalyptic number.

It is an amenable number.

58231440 is an abundant number, since it is smaller than the sum of its proper divisors (142350960).

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

58231440 is a wasteful number, since it uses less digits than its factorization.

58231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26981 (or 26969 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 58231440 is about 7630.9527583389. The cubic root of 58231440 is about 387.6018518253.

The spelling of 58231440 in words is "fifty-eight million, two hundred thirty-one thousand, four hundred forty".