2398690 has 16 divisors (see below), whose sum is σ = 4934592. Its totient is φ = 822384.

The previous prime is 2398681. The next prime is 2398699. The reversal of 2398690 is 968932.

2398690 = 55² + 56² + ... + 194².

It is an interprime number because it is at equal distance from previous prime (2398681) and next prime (2398699).

It is a super-2 number, since 2×2398690² = 11507427432200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2398699) 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, 17064 + ... + 17203.

It is an arithmetic number, because the mean of its divisors is an integer number (308412).

2^2398690 is an apocalyptic number.

2398690 is an abundant number, since it is smaller than the sum of its proper divisors (2535902).

2398690 is a wasteful number, since it uses less digits than its factorization.

2398690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34281.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2398690 is about 1548.7704800906. The cubic root of 2398690 is about 133.8622256617.

The spelling of 2398690 in words is "two million, three hundred ninety-eight thousand, six hundred ninety".