16979490 has 64 divisors (see below), whose sum is σ = 49403520. Its totient is φ = 4115520.

The previous prime is 16979477. The next prime is 16979491. The reversal of 16979490 is 9497961.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16979491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112 + ... + 5828.

It is an arithmetic number, because the mean of its divisors is an integer number (771930).

Almost surely, 2^16979490 is an apocalyptic number.

16979490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16979490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24701760).

16979490 is an abundant number, since it is smaller than the sum of its proper divisors (32424030).

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

16979490 is a wasteful number, since it uses less digits than its factorization.

16979490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744 (or 5738 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 16979490 is about 4120.6176721458. The cubic root of 16979490 is about 257.0247115988.

The spelling of 16979490 in words is "sixteen million, nine hundred seventy-nine thousand, four hundred ninety".