16042780 has 24 divisors (see below), whose sum is σ = 36281952. Its totient is φ = 5923392.

The previous prime is 16042777. The next prime is 16042787. The reversal of 16042780 is 8724061.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16042787) 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 7 ways as a sum of consecutive naturals, for example, 30592 + ... + 31111.

It is an arithmetic number, because the mean of its divisors is an integer number (1511748).

Almost surely, 2^16042780 is an apocalyptic number.

16042780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16042780 is an abundant number, since it is smaller than the sum of its proper divisors (20239172).

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

16042780 is a wasteful number, since it uses less digits than its factorization.

16042780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61725 (or 61723 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 16042780 is about 4005.3439303011. The cubic root of 16042780 is about 252.2085910452.

The spelling of 16042780 in words is "sixteen million, forty-two thousand, seven hundred eighty".