16403898 has 64 divisors (see below), whose sum is σ = 39739392. Its totient is φ = 4415040.

The previous prime is 16403887. The next prime is 16403923. The reversal of 16403898 is 89830461.

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, 55840 + ... + 56132.

It is an arithmetic number, because the mean of its divisors is an integer number (620928).

Almost surely, 2^16403898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16403898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19869696).

16403898 is an abundant number, since it is smaller than the sum of its proper divisors (23335494).

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

16403898 is a wasteful number, since it uses less digits than its factorization.

16403898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 16403898 is about 4050.1725889152. The cubic root of 16403898 is about 254.0869460749.

The spelling of 16403898 in words is "sixteen million, four hundred three thousand, eight hundred ninety-eight".