58821990 has 16 divisors (see below), whose sum is σ = 141172848. Its totient is φ = 15685856.

The previous prime is 58821977. The next prime is 58821991. The reversal of 58821990 is 9912885.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58821991) 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, 980337 + ... + 980396.

It is an arithmetic number, because the mean of its divisors is an integer number (8823303).

Almost surely, 2^58821990 is an apocalyptic number.

58821990 is an abundant number, since it is smaller than the sum of its proper divisors (82350858).

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

58821990 is a wasteful number, since it uses less digits than its factorization.

58821990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960743.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 58821990 is about 7669.5495304483. The cubic root of 58821990 is about 388.9077261019.

It can be divided in two parts, 588 and 21990, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 58821990 in words is "fifty-eight million, eight hundred twenty-one thousand, nine hundred ninety".