16197790 has 32 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 5512704.

The previous prime is 16197781. The next prime is 16197791. The reversal of 16197790 is 9779161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16197791) 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, 9654 + ... + 11206.

It is an arithmetic number, because the mean of its divisors is an integer number (1048950).

Almost surely, 2^16197790 is an apocalyptic number.

16197790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16197790 is an abundant number, since it is smaller than the sum of its proper divisors (17368610).

16197790 is a wasteful number, since it uses less digits than its factorization.

16197790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 16197790 is about 4024.6478106786. The cubic root of 16197790 is about 253.0182929797.

It can be divided in two parts, 1619 and 7790, that added together give a square (9409 = 97²).

The spelling of 16197790 in words is "sixteen million, one hundred ninety-seven thousand, seven hundred ninety".