58143640 has 32 divisors (see below), whose sum is σ = 131220000. Its totient is φ = 23186944.

The previous prime is 58143599. The next prime is 58143641. The reversal of 58143640 is 4634185.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58143641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12336 + ... + 16384.

It is an arithmetic number, because the mean of its divisors is an integer number (4100625).

Almost surely, 2^58143640 is an apocalyptic number.

It is an amenable number.

58143640 is an abundant number, since it is smaller than the sum of its proper divisors (73076360).

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

58143640 is a wasteful number, since it uses less digits than its factorization.

58143640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419 (or 4415 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 58143640 is about 7625.1977023550. The cubic root of 58143640 is about 387.4069481737.

The spelling of 58143640 in words is "fifty-eight million, one hundred forty-three thousand, six hundred forty".