2900040 has 128 divisors (see below), whose sum is σ = 10281600. Its totient is φ = 648960.

The previous prime is 2900039. The next prime is 2900057. The reversal of 2900040 is 400092.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 2899992 and 2900019.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223074 + ... + 223086.

It is an arithmetic number, because the mean of its divisors is an integer number (80325).

2^2900040 is an apocalyptic number.

2900040 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 2900040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5140800).

2900040 is an abundant number, since it is smaller than the sum of its proper divisors (7381560).

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

2900040 is a wasteful number, since it uses less digits than its factorization.

2900040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2900040 is about 1702.9503809565. The cubic root of 2900040 is about 142.6049703632.

The spelling of 2900040 in words is "two million, nine hundred thousand, forty".