16779372 has 12 divisors (see below), whose sum is σ = 39151896. Its totient is φ = 5593120.

The previous prime is 16779361. The next prime is 16779377. The reversal of 16779372 is 27397761.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (16779377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699129 + ... + 699152.

It is an arithmetic number, because the mean of its divisors is an integer number (3262658).

Almost surely, 2^16779372 is an apocalyptic number.

16779372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16779372 is an abundant number, since it is smaller than the sum of its proper divisors (22372524).

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

16779372 is a wasteful number, since it uses less digits than its factorization.

16779372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398288 (or 1398286 counting only the distinct ones).

The product of its digits is 111132, while the sum is 42.

The square root of 16779372 is about 4096.2631751390. The cubic root of 16779372 is about 256.0109655134.

The spelling of 16779372 in words is "sixteen million, seven hundred seventy-nine thousand, three hundred seventy-two".