2921600 has 96 divisors (see below), whose sum is σ = 7968240. Its totient is φ = 1049600.

The previous prime is 2921599. The next prime is 2921617. The reversal of 2921600 is 61292.

2921600 is nontrivially palindromic in base 7.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a zygodrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35159 + ... + 35241.

2^2921600 is an apocalyptic number.

2921600 is a gapful number since it is divisible by the number (20) 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 2921600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3984120).

2921600 is an abundant number, since it is smaller than the sum of its proper divisors (5046640).

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

2921600 is a wasteful number, since it uses less digits than its factorization.

2921600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2921600 is about 1709.2688495377. The cubic root of 2921600 is about 142.9574913994.

Adding to 2921600 its reverse (61292), we get a palindrome (2982892).

The spelling of 2921600 in words is "two million, nine hundred twenty-one thousand, six hundred".