7147990 has 32 divisors (see below), whose sum is σ = 14346720. Its totient is φ = 2548224.

The previous prime is 7147979. The next prime is 7147991. The reversal of 7147990 is 997417.

7147990 is nontrivially palindromic in base 16.

It is a super-2 number, since 2×7147990² = 102187522080200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7147991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124 + ... + 4336.

It is an arithmetic number, because the mean of its divisors is an integer number (448335).

Almost surely, 2^7147990 is an apocalyptic number.

7147990 is an abundant number, since it is smaller than the sum of its proper divisors (7198730).

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

7147990 is a wasteful number, since it uses less digits than its factorization.

7147990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 7147990 is about 2673.5725163159. The cubic root of 7147990 is about 192.6317981995.

The spelling of 7147990 in words is "seven million, one hundred forty-seven thousand, nine hundred ninety".