16419890 has 32 divisors (see below), whose sum is σ = 30433536. Its totient is φ = 6376320.

The previous prime is 16419889. The next prime is 16419911. The reversal of 16419890 is 9891461.

It is a happy number.

16419890 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 2×16419890² = 539225575224200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 60455 + ... + 60725.

It is an arithmetic number, because the mean of its divisors is an integer number (951048).

Almost surely, 2^16419890 is an apocalyptic number.

16419890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16419890 is a deficient number, since it is larger than the sum of its proper divisors (14013646).

16419890 is a wasteful number, since it uses less digits than its factorization.

16419890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 16419890 is about 4052.1463448400. The cubic root of 16419890 is about 254.1694882186.

The spelling of 16419890 in words is "sixteen million, four hundred nineteen thousand, eight hundred ninety".