2381520 has 40 divisors (see below), whose sum is σ = 7383456. Its totient is φ = 635008.

The previous prime is 2381507. The next prime is 2381521. The reversal of 2381520 is 251832.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4722 + ... + 5201.

2^2381520 is an apocalyptic number.

2381520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2381520 is an abundant number, since it is smaller than the sum of its proper divisors (5001936).

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

2381520 is a wasteful number, since it uses less digits than its factorization.

2381520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9939 (or 9933 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2381520 is about 1543.2174182532. The cubic root of 2381520 is about 133.5420619611.

The spelling of 2381520 in words is "two million, three hundred eighty-one thousand, five hundred twenty".