16390550 has 48 divisors (see below), whose sum is σ = 35234352. Its totient is φ = 5606400.

The previous prime is 16390547. The next prime is 16390553. The reversal of 16390550 is 5509361.

It is an interprime number because it is at equal distance from previous prime (16390547) and next prime (16390553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390553) 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 23 ways as a sum of consecutive naturals, for example, 8474 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (734049).

Almost surely, 2^16390550 is an apocalyptic number.

16390550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16390550 is an abundant number, since it is smaller than the sum of its proper divisors (18843802).

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

16390550 is a wasteful number, since it uses less digits than its factorization.

16390550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 16390550 is about 4048.5244225520. The cubic root of 16390550 is about 254.0180097590.

The spelling of 16390550 in words is "sixteen million, three hundred ninety thousand, five hundred fifty".