16045780 has 24 divisors (see below), whose sum is σ = 33846120. Its totient is φ = 6389760.

The previous prime is 16045741. The next prime is 16045811. The reversal of 16045780 is 8754061.

It can be written as a sum of positive squares in 4 ways, for example, as 2414916 + 13630864 = 1554^2 + 3692^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3156 + ... + 6484.

It is an arithmetic number, because the mean of its divisors is an integer number (1410255).

Almost surely, 2^16045780 is an apocalyptic number.

16045780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16045780 is an abundant number, since it is smaller than the sum of its proper divisors (17800340).

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

16045780 is a wasteful number, since it uses less digits than its factorization.

16045780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3577 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 16045780 is about 4005.7184124699. The cubic root of 16045780 is about 252.2243110682.

The spelling of 16045780 in words is "sixteen million, forty-five thousand, seven hundred eighty".