2651240 has 32 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 1045824.

The previous prime is 2651239. The next prime is 2651273. The reversal of 2651240 is 421562.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2741 + ... + 3579.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

2^2651240 is an apocalyptic number.

2651240 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 2651240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3024000).

2651240 is an abundant number, since it is smaller than the sum of its proper divisors (3396760).

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

2651240 is a wasteful number, since it uses less digits than its factorization.

2651240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2651240 is about 1628.2628780390. The cubic root of 2651240 is about 138.4043312265.

The spelling of 2651240 in words is "two million, six hundred fifty-one thousand, two hundred forty".