16409730 has 32 divisors (see below), whose sum is σ = 41457600. Its totient is φ = 4145472.

The previous prime is 16409719. The next prime is 16409753. The reversal of 16409730 is 3790461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13825 + ... + 14964.

It is an arithmetic number, because the mean of its divisors is an integer number (1295550).

Almost surely, 2^16409730 is an apocalyptic number.

16409730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16409730 is an abundant number, since it is smaller than the sum of its proper divisors (25047870).

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

16409730 is a wasteful number, since it uses less digits than its factorization.

16409730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28818.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 16409730 is about 4050.8924942536. The cubic root of 16409730 is about 254.1170539492.

The spelling of 16409730 in words is "sixteen million, four hundred nine thousand, seven hundred thirty".