10423640 has 32 divisors (see below), whose sum is σ = 24090480. Its totient is φ = 4056192.

The previous prime is 10423631. The next prime is 10423643. The reversal of 10423640 is 4632401.

It is a happy number.

10423640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (10423643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 5001.

Almost surely, 2^10423640 is an apocalyptic number.

10423640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10423640 is an abundant number, since it is smaller than the sum of its proper divisors (13666840).

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

10423640 is a wasteful number, since it uses less digits than its factorization.

10423640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091 (or 7087 counting only the distinct ones).

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

The square root of 10423640 is about 3228.5662452550. The cubic root of 10423640 is about 218.4438394554.

The spelling of 10423640 in words is "ten million, four hundred twenty-three thousand, six hundred forty".