16550940 has 96 divisors (see below), whose sum is σ = 53512704. Its totient is φ = 3744000.

The previous prime is 16550929. The next prime is 16550983. The reversal of 16550940 is 4905561.

16550940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16550940² = 547867229767200, 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 = 16550898 and 16550907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65815 + ... + 66065.

It is an arithmetic number, because the mean of its divisors is an integer number (557424).

Almost surely, 2^16550940 is an apocalyptic number.

16550940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16550940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26756352).

16550940 is an abundant number, since it is smaller than the sum of its proper divisors (36961764).

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

16550940 is a wasteful number, since it uses less digits than its factorization.

16550940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 16550940 is about 4068.2846508080. The cubic root of 16550940 is about 254.8438875300.

The spelling of 16550940 in words is "sixteen million, five hundred fifty thousand, nine hundred forty".