15968100 has 144 divisors (see below), whose sum is σ = 50996736. Its totient is φ = 3840000.

The previous prime is 15968087. The next prime is 15968101. The reversal of 15968100 is 186951.

It is a happy number.

It is a super-2 number, since 2×15968100² = 509960435220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15968101) 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, 158050 + ... + 158150.

It is an arithmetic number, because the mean of its divisors is an integer number (354144).

Almost surely, 2^15968100 is an apocalyptic number.

15968100 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 15968100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25498368).

15968100 is an abundant number, since it is smaller than the sum of its proper divisors (35028636).

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

15968100 is a wasteful number, since it uses less digits than its factorization.

15968100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 15968100 is about 3996.0105104967. The cubic root of 15968100 is about 251.8166340552.

The spelling of 15968100 in words is "fifteen million, nine hundred sixty-eight thousand, one hundred".