2308297990 has 16 divisors (see below), whose sum is σ = 4169623248. Its totient is φ = 920055456.

The previous prime is 2308297987. The next prime is 2308297997. The reversal of 2308297990 is 997928032.

It is a super-2 number, since 2×2308297990² = 10656479221276080200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2308297997) 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, 404997 + ... + 410656.

It is an arithmetic number, because the mean of its divisors is an integer number (260601453).

Almost surely, 2^2308297990 is an apocalyptic number.

2308297990 is a deficient number, since it is larger than the sum of its proper divisors (1861325258).

2308297990 is a wasteful number, since it uses less digits than its factorization.

2308297990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815943.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 2308297990 is about 48044.7498692625. The cubic root of 2308297990 is about 1321.5916654629.

The spelling of 2308297990 in words is "two billion, three hundred eight million, two hundred ninety-seven thousand, nine hundred ninety".