82988390 has 32 divisors (see below), whose sum is σ = 166497120. Its totient is φ = 29597184.

The previous prime is 82988377. The next prime is 82988413. The reversal of 82988390 is 9388928.

It is a happy number.

It is a Curzon number.

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, 9617 + ... + 16076.

It is an arithmetic number, because the mean of its divisors is an integer number (5203035).

Almost surely, 2^82988390 is an apocalyptic number.

82988390 is an abundant number, since it is smaller than the sum of its proper divisors (83508730).

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

82988390 is a wasteful number, since it uses less digits than its factorization.

82988390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25736.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 82988390 is about 9109.7963753313. The cubic root of 82988390 is about 436.1867273856.

The spelling of 82988390 in words is "eighty-two million, nine hundred eighty-eight thousand, three hundred ninety".