10623440 has 60 divisors (see below), whose sum is σ = 25646796. Its totient is φ = 4091904.

The previous prime is 10623439. The next prime is 10623443. The reversal of 10623440 is 4432601.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1308736 + 9314704 = 1144^2 + 3052^2 .

It is a super-2 number, since 2×10623440² = 225714954867200, which contains 22 as substring.

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 (10623443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109472 + ... + 109568.

Almost surely, 2^10623440 is an apocalyptic number.

10623440 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 10623440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12823398).

10623440 is an abundant number, since it is smaller than the sum of its proper divisors (15023356).

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

10623440 is an equidigital number, since it uses as much as digits as its factorization.

10623440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 10623440 is about 3259.3619007407. The cubic root of 10623440 is about 219.8307237804.

The spelling of 10623440 in words is "ten million, six hundred twenty-three thousand, four hundred forty".