16490100 has 144 divisors (see below), whose sum is σ = 54996480. Its totient is φ = 3772800.

The previous prime is 16490059. The next prime is 16490101. The reversal of 16490100 is 109461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62569 + ... + 62831.

It is an arithmetic number, because the mean of its divisors is an integer number (381920).

Almost surely, 2^16490100 is an apocalyptic number.

16490100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16490100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27498240).

16490100 is an abundant number, since it is smaller than the sum of its proper divisors (38506380).

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

16490100 is a wasteful number, since it uses less digits than its factorization.

16490100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 16490100 is about 4060.8004137116. The cubic root of 16490100 is about 254.5312418626.

Adding to 16490100 its reverse (109461), we get a palindrome (16599561).

The spelling of 16490100 in words is "sixteen million, four hundred ninety thousand, one hundred".