2321400 has 96 divisors (see below), whose sum is σ = 7432560. Its totient is φ = 599040.

The previous prime is 2321399. The next prime is 2321443. The reversal of 2321400 is 41232.

2321400 = T₄₁ + T₄₂ + ... + T₂₄₀.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31764 + ... + 31836.

2^2321400 is an apocalyptic number.

2321400 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 2321400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3716280).

2321400 is an abundant number, since it is smaller than the sum of its proper divisors (5111160).

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

2321400 is a wasteful number, since it uses less digits than its factorization.

2321400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2321400 is about 1523.6141243766. The cubic root of 2321400 is about 132.4087421931.

Adding to 2321400 its reverse (41232), we get a palindrome (2362632).

The spelling of 2321400 in words is "two million, three hundred twenty-one thousand, four hundred".