16672890 has 32 divisors (see below), whose sum is σ = 43094016. Its totient is φ = 4104000.

The previous prime is 16672867. The next prime is 16672897. The reversal of 16672890 is 9827661.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (16672897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20986 + ... + 21765.

It is an arithmetic number, because the mean of its divisors is an integer number (1346688).

Almost surely, 2^16672890 is an apocalyptic number.

16672890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16672890 is an abundant number, since it is smaller than the sum of its proper divisors (26421126).

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

16672890 is a wasteful number, since it uses less digits than its factorization.

16672890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42774.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16672890 is about 4083.2450330589. The cubic root of 16672890 is about 255.4682668350.

The spelling of 16672890 in words is "sixteen million, six hundred seventy-two thousand, eight hundred ninety".