2621240 has 32 divisors (see below), whose sum is σ = 6210000. Its totient is φ = 993024.

The previous prime is 2621239. The next prime is 2621257. The reversal of 2621240 is 421262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965 + ... + 2484.

2^2621240 is an apocalyptic number.

2621240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2621240 is an abundant number, since it is smaller than the sum of its proper divisors (3588760).

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

2621240 is a wasteful number, since it uses less digits than its factorization.

2621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3475 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2621240 is about 1619.0243975926. The cubic root of 2621240 is about 137.8803135060.

The spelling of 2621240 in words is "two million, six hundred twenty-one thousand, two hundred forty".