2901640 has 64 divisors (see below), whose sum is σ = 7666560. Its totient is φ = 967680.

The previous prime is 2901617. The next prime is 2901643. The reversal of 2901640 is 461092.

It is not an unprimeable number, because it can be changed into a prime (2901643) 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, 11920 + ... + 12160.

It is an arithmetic number, because the mean of its divisors is an integer number (119790).

2^2901640 is an apocalyptic number.

2901640 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 2901640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3833280).

2901640 is an abundant number, since it is smaller than the sum of its proper divisors (4764920).

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

2901640 is a wasteful number, since it uses less digits than its factorization.

2901640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2901640 is about 1703.4200891148. The cubic root of 2901640 is about 142.6311913814.

The spelling of 2901640 in words is "two million, nine hundred one thousand, six hundred forty".