16573940 has 12 divisors (see below), whose sum is σ = 34805316. Its totient is φ = 6629568.

The previous prime is 16573927. The next prime is 16573957. The reversal of 16573940 is 4937561.

It can be written as a sum of positive squares in 2 ways, for example, as 4477456 + 12096484 = 2116^2 + 3478^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16573940.

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, 414329 + ... + 414368.

It is an arithmetic number, because the mean of its divisors is an integer number (2900443).

Almost surely, 2^16573940 is an apocalyptic number.

16573940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16573940 is an abundant number, since it is smaller than the sum of its proper divisors (18231376).

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

16573940 is a wasteful number, since it uses less digits than its factorization.

16573940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828706 (or 828704 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 16573940 is about 4071.1104136341. The cubic root of 16573940 is about 254.9618807559.

The spelling of 16573940 in words is "sixteen million, five hundred seventy-three thousand, nine hundred forty".