7982390 has 16 divisors (see below), whose sum is σ = 15473808. Its totient is φ = 2947296.

The previous prime is 7982329. The next prime is 7982423. The reversal of 7982390 is 932897.

It is a super-2 number, since 2×7982390² = 127437100224200, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁸ + 9⁵ + 8 + 2¹⁵ + 3¹³ + 9⁶ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30572 + ... + 30831.

It is an arithmetic number, because the mean of its divisors is an integer number (967113).

Almost surely, 2^7982390 is an apocalyptic number.

7982390 is a deficient number, since it is larger than the sum of its proper divisors (7491418).

7982390 is a wasteful number, since it uses less digits than its factorization.

7982390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61423.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 7982390 is about 2825.3123721104. The cubic root of 7982390 is about 199.8531421903.

The spelling of 7982390 in words is "seven million, nine hundred eighty-two thousand, three hundred ninety".