2609400 has 48 divisors (see below), whose sum is σ = 8091000. Its totient is φ = 695680.

The previous prime is 2609377. The next prime is 2609401. The reversal of 2609400 is 49062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1575 + ... + 2774.

2^2609400 is an apocalyptic number.

2609400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2609400 is an abundant number, since it is smaller than the sum of its proper divisors (5481600).

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

2609400 is a wasteful number, since it uses less digits than its factorization.

2609400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368 (or 4359 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2609400 is about 1615.3637361288. The cubic root of 2609400 is about 137.6724008292.

The spelling of 2609400 in words is "two million, six hundred nine thousand, four hundred".