2619940 has 24 divisors (see below), whose sum is σ = 5560632. Its totient is φ = 1036800.

The previous prime is 2619937. The next prime is 2619961. The reversal of 2619940 is 499162.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1806336 + 813604 = 1344^2 + 902^2 .

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, 1372 + ... + 2668.

It is an arithmetic number, because the mean of its divisors is an integer number (231693).

2^2619940 is an apocalyptic number.

2619940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2619940 is an abundant number, since it is smaller than the sum of its proper divisors (2940692).

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

2619940 is a wasteful number, since it uses less digits than its factorization.

2619940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2619940 is about 1618.6228714559. The cubic root of 2619940 is about 137.8575158927.

It can be divided in two parts, 261 and 9940, that added together give a palindrome (10201).

The spelling of 2619940 in words is "two million, six hundred nineteen thousand, nine hundred forty".