4261440 has 112 divisors (see below), whose sum is σ = 14191488. Its totient is φ = 1081344.

The previous prime is 4261423. The next prime is 4261483. The reversal of 4261440 is 441624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21984 + ... + 22176.

Almost surely, 2^4261440 is an apocalyptic number.

4261440 is a gapful number since it is divisible by the number (40) 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 4261440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7095744).

4261440 is an abundant number, since it is smaller than the sum of its proper divisors (9930048).

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

4261440 is a wasteful number, since it uses less digits than its factorization.

4261440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4261440 is about 2064.3255557203. The cubic root of 4261440 is about 162.1257977319.

The spelling of 4261440 in words is "four million, two hundred sixty-one thousand, four hundred forty".