16388790 has 32 divisors (see below), whose sum is σ = 42909696. Its totient is φ = 3972960.

The previous prime is 16388789. The next prime is 16388791. The reversal of 16388790 is 9788361.

It is an interprime number because it is at equal distance from previous prime (16388789) and next prime (16388791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16388791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24502 + ... + 25161.

It is an arithmetic number, because the mean of its divisors is an integer number (1340928).

Almost surely, 2^16388790 is an apocalyptic number.

16388790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16388790 is an abundant number, since it is smaller than the sum of its proper divisors (26520906).

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

16388790 is a wasteful number, since it uses less digits than its factorization.

16388790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49684.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 16388790 is about 4048.3070535719. The cubic root of 16388790 is about 254.0089173714.

The spelling of 16388790 in words is "sixteen million, three hundred eighty-eight thousand, seven hundred ninety".