16442980 has 24 divisors (see below), whose sum is σ = 36348480. Its totient is φ = 6230880.

The previous prime is 16442963. The next prime is 16442983. The reversal of 16442980 is 8924461.

It is a super-3 number, since 3×16442980³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16442983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21256 + ... + 22015.

It is an arithmetic number, because the mean of its divisors is an integer number (1514520).

Almost surely, 2^16442980 is an apocalyptic number.

16442980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16442980 is an abundant number, since it is smaller than the sum of its proper divisors (19905500).

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

16442980 is a wasteful number, since it uses less digits than its factorization.

16442980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43299 (or 43297 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 16442980 is about 4054.9944512909. The cubic root of 16442980 is about 254.2885719375.

It can be divided in two parts, 1644 and 2980, that added together give a square (4624 = 68²).

The spelling of 16442980 in words is "sixteen million, four hundred forty-two thousand, nine hundred eighty".