16949790 has 128 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 3784320.

The previous prime is 16949789. The next prime is 16949791. The reversal of 16949790 is 9794961.

It is an interprime number because it is at equal distance from previous prime (16949789) and next prime (16949791).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16949791) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38391 + ... + 38829.

It is an arithmetic number, because the mean of its divisors is an integer number (415800).

Almost surely, 2^16949790 is an apocalyptic number.

16949790 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 16949790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26611200).

16949790 is an abundant number, since it is smaller than the sum of its proper divisors (36272610).

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

16949790 is a wasteful number, since it uses less digits than its factorization.

16949790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 473 counting only the distinct ones).

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

The square root of 16949790 is about 4117.0122661950. The cubic root of 16949790 is about 256.8747642387.

The spelling of 16949790 in words is "sixteen million, nine hundred forty-nine thousand, seven hundred ninety".