16442790 has 128 divisors (see below), whose sum is σ = 51287040. Its totient is φ = 3276288.

The previous prime is 16442779. The next prime is 16442801. The reversal of 16442790 is 9724461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16442779) and next prime (16442801).

It is a super-3 number, since 3×16442790³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51712 + ... + 52028.

It is an arithmetic number, because the mean of its divisors is an integer number (400680).

Almost surely, 2^16442790 is an apocalyptic number.

16442790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16442790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25643520).

16442790 is an abundant number, since it is smaller than the sum of its proper divisors (34844250).

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

16442790 is a wasteful number, since it uses less digits than its factorization.

16442790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 16442790 is about 4054.9710233243. The cubic root of 16442790 is about 254.2875924919.

The spelling of 16442790 in words is "sixteen million, four hundred forty-two thousand, seven hundred ninety".