16780379 has 16 divisors (see below), whose sum is σ = 21012480. Its totient is φ = 13018560.

The previous prime is 16780369. The next prime is 16780381. The reversal of 16780379 is 97308761.

It is a cyclic number.

It is not a de Polignac number, because 16780379 - 2²⁰ = 15731803 is a prime.

It is a super-2 number, since 2×16780379² = 563162238767282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16780369) 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, 29207 + ... + 29775.

It is an arithmetic number, because the mean of its divisors is an integer number (1313280).

Almost surely, 2^16780379 is an apocalyptic number.

16780379 is a deficient number, since it is larger than the sum of its proper divisors (4232101).

16780379 is a wasteful number, since it uses less digits than its factorization.

16780379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 16780379 is about 4096.3860902019. The cubic root of 16780379 is about 256.0160868390.

The spelling of 16780379 in words is "sixteen million, seven hundred eighty thousand, three hundred seventy-nine".