16923540 has 24 divisors (see below), whose sum is σ = 47386080. Its totient is φ = 4512928.

The previous prime is 16923539. The next prime is 16923563. The reversal of 16923540 is 4532961.

It is a super-2 number, since 2×16923540² = 572812412263200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16923498 and 16923507.

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, 140970 + ... + 141089.

It is an arithmetic number, because the mean of its divisors is an integer number (1974420).

Almost surely, 2^16923540 is an apocalyptic number.

16923540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16923540 is an abundant number, since it is smaller than the sum of its proper divisors (30462540).

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

16923540 is a wasteful number, since it uses less digits than its factorization.

16923540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282071 (or 282069 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 16923540 is about 4113.8230394610. The cubic root of 16923540 is about 256.7420891144.

The spelling of 16923540 in words is "sixteen million, nine hundred twenty-three thousand, five hundred forty".