2261240 has 16 divisors (see below), whose sum is σ = 5087880. Its totient is φ = 904480.

The previous prime is 2261227. The next prime is 2261267. The reversal of 2261240 is 421622.

It is a super-2 number, since 2×2261240² = 10226412675200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28226 + ... + 28305.

2^2261240 is an apocalyptic number.

2261240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2261240 is an abundant number, since it is smaller than the sum of its proper divisors (2826640).

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

2261240 is a wasteful number, since it uses less digits than its factorization.

2261240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56542 (or 56538 counting only the distinct ones).

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

The square root of 2261240 is about 1503.7419991475. The cubic root of 2261240 is about 131.2549083576.

Adding to 2261240 its reverse (421622), we get a palindrome (2682862).

The spelling of 2261240 in words is "two million, two hundred sixty-one thousand, two hundred forty".