11422640 has 80 divisors (see below), whose sum is σ = 29007072. Its totient is φ = 4165632.

The previous prime is 11422639. The next prime is 11422643. The reversal of 11422640 is 4622411.

11422640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11422643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50207 + ... + 50433.

Almost surely, 2^11422640 is an apocalyptic number.

11422640 is a gapful number since it is divisible by the number (10) 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 11422640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14503536).

11422640 is an abundant number, since it is smaller than the sum of its proper divisors (17584432).

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

11422640 is a wasteful number, since it uses less digits than its factorization.

11422640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 11422640 is about 3379.7396349423. The cubic root of 11422640 is about 225.2106011686.

The spelling of 11422640 in words is "eleven million, four hundred twenty-two thousand, six hundred forty".