16922420 has 24 divisors (see below), whose sum is σ = 35689248. Its totient is φ = 6740000.

The previous prime is 16922417. The next prime is 16922447. The reversal of 16922420 is 2422961.

It is a super-4 number, since 4×16922420⁴ (a number of 30 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16922420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335 + ... + 6705.

It is an arithmetic number, because the mean of its divisors is an integer number (1487052).

Almost surely, 2^16922420 is an apocalyptic number.

16922420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16922420 is an abundant number, since it is smaller than the sum of its proper divisors (18766828).

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

16922420 is a wasteful number, since it uses less digits than its factorization.

16922420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631 (or 3629 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16922420 is about 4113.6869107894. The cubic root of 16922420 is about 256.7364252584.

The spelling of 16922420 in words is "sixteen million, nine hundred twenty-two thousand, four hundred twenty".