16398370 has 16 divisors (see below), whose sum is σ = 31253688. Its totient is φ = 6173440.

The previous prime is 16398341. The next prime is 16398377. The reversal of 16398370 is 7389361.

16398370 = 493² + 494² + ... + 552².

It can be written as a sum of positive squares in 4 ways, for example, as 16394401 + 3969 = 4049^2 + 63^2 .

It is not an unprimeable number, because it can be changed into a prime (16398377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48061 + ... + 48400.

Almost surely, 2^16398370 is an apocalyptic number.

16398370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16398370 is a deficient number, since it is larger than the sum of its proper divisors (14855318).

16398370 is a wasteful number, since it uses less digits than its factorization.

16398370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96485.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 16398370 is about 4049.4900913572. The cubic root of 16398370 is about 254.0584010213.

Subtracting from 16398370 its reverse (7389361), we obtain a palindrome (9009009).

The spelling of 16398370 in words is "sixteen million, three hundred ninety-eight thousand, three hundred seventy".