2317920 has 96 divisors (see below), whose sum is σ = 7983360. Its totient is φ = 560640.

The previous prime is 2317919. The next prime is 2317921. The reversal of 2317920 is 297132.

2317920 = T₁₆₅ + T₁₆₆ + ... + T₂₆₃.

It is an interprime number because it is at equal distance from previous prime (2317919) and next prime (2317921).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2317921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5061 + ... + 5499.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^2317920 is an apocalyptic number.

2317920 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 2317920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3991680).

2317920 is an abundant number, since it is smaller than the sum of its proper divisors (5665440).

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

2317920 is a wasteful number, since it uses less digits than its factorization.

2317920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2317920 is about 1522.4716746134. The cubic root of 2317920 is about 132.3425446590.

2317920 divided by its sum of digits (24) gives a triangular number (96580 = T₄₃₉).

The spelling of 2317920 in words is "two million, three hundred seventeen thousand, nine hundred twenty".