16381650 has 24 divisors (see below), whose sum is σ = 40626864. Its totient is φ = 4368400.

The previous prime is 16381649. The next prime is 16381657. The reversal of 16381650 is 5618361.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16381657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54456 + ... + 54755.

It is an arithmetic number, because the mean of its divisors is an integer number (1692786).

Almost surely, 2^16381650 is an apocalyptic number.

16381650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16381650 is an abundant number, since it is smaller than the sum of its proper divisors (24245214).

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

16381650 is a wasteful number, since it uses less digits than its factorization.

16381650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109226 (or 109221 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 16381650 is about 4047.4251073985. The cubic root of 16381650 is about 253.9720245296.

The spelling of 16381650 in words is "sixteen million, three hundred eighty-one thousand, six hundred fifty".