16312730 has 32 divisors (see below), whose sum is σ = 33699456. Its totient is φ = 5569344.

The previous prime is 16312717. The next prime is 16312739. The reversal of 16312730 is 3721361.

It is a happy number.

It is a super-2 number, since 2×16312730² = 532210320105800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16312696 and 16312705.

It is not an unprimeable number, because it can be changed into a prime (16312739) 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, 27497 + ... + 28083.

It is an arithmetic number, because the mean of its divisors is an integer number (1053108).

Almost surely, 2^16312730 is an apocalyptic number.

16312730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16312730 is an abundant number, since it is smaller than the sum of its proper divisors (17386726).

16312730 is a wasteful number, since it uses less digits than its factorization.

16312730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 16312730 is about 4038.9020785357. The cubic root of 16312730 is about 253.6153580478.

The spelling of 16312730 in words is "sixteen million, three hundred twelve thousand, seven hundred thirty".