16920190 has 32 divisors (see below), whose sum is σ = 35524800. Its totient is φ = 5800032.

The previous prime is 16920181. The next prime is 16920191. The reversal of 16920190 is 9102961.

It is a super-2 number, since 2×16920190² = 572585659272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16920191) 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, 964 + ... + 5896.

It is an arithmetic number, because the mean of its divisors is an integer number (1110150).

Almost surely, 2^16920190 is an apocalyptic number.

16920190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16920190 is an abundant number, since it is smaller than the sum of its proper divisors (18604610).

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

16920190 is an equidigital number, since it uses as much as digits as its factorization.

16920190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961 (or 4947 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 16920190 is about 4113.4158554661. The cubic root of 16920190 is about 256.7251473722.

The spelling of 16920190 in words is "sixteen million, nine hundred twenty thousand, one hundred ninety".