16123890 has 32 divisors (see below), whose sum is σ = 38882880. Its totient is φ = 4279104.

The previous prime is 16123883. The next prime is 16123901. The reversal of 16123890 is 9832161.

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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5697 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (1215090).

Almost surely, 2^16123890 is an apocalyptic number.

16123890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16123890 is an abundant number, since it is smaller than the sum of its proper divisors (22758990).

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

16123890 is a wasteful number, since it uses less digits than its factorization.

16123890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 16123890 is about 4015.4563875106. The cubic root of 16123890 is about 252.6329202460.

The spelling of 16123890 in words is "sixteen million, one hundred twenty-three thousand, eight hundred ninety".