2921320 has 32 divisors (see below), whose sum is σ = 6624000. Its totient is φ = 1159488.

The previous prime is 2921293. The next prime is 2921327. The reversal of 2921320 is 231292.

It is a happy number.

It is a super-2 number, since 2×2921320² = 17068221084800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2921327) 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, 7777 + ... + 8143.

It is an arithmetic number, because the mean of its divisors is an integer number (207000).

2^2921320 is an apocalyptic number.

2921320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2921320 is an abundant number, since it is smaller than the sum of its proper divisors (3702680).

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

2921320 is a wasteful number, since it uses less digits than its factorization.

2921320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2921320 is about 1709.1869412092. The cubic root of 2921320 is about 142.9529243384.

The spelling of 2921320 in words is "two million, nine hundred twenty-one thousand, three hundred twenty".