16722040 has 16 divisors (see below), whose sum is σ = 37624680. Its totient is φ = 6688800.

The previous prime is 16722023. The next prime is 16722059. The reversal of 16722040 is 4022761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208986 + ... + 209065.

Almost surely, 2^16722040 is an apocalyptic number.

16722040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16722040 is an abundant number, since it is smaller than the sum of its proper divisors (20902640).

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

16722040 is a wasteful number, since it uses less digits than its factorization.

16722040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418062 (or 418058 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 16722040 is about 4089.2591015977. The cubic root of 16722040 is about 255.7190521374.

The spelling of 16722040 in words is "sixteen million, seven hundred twenty-two thousand, forty".