10420638 has 16 divisors (see below), whose sum is σ = 20891520. Its totient is φ = 3465176.

The previous prime is 10420637. The next prime is 10420687. The reversal of 10420638 is 83602401.

It is a happy number.

10420638 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420637) 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, 943 + ... + 4661.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^10420638 is an apocalyptic number.

10420638 is an abundant number, since it is smaller than the sum of its proper divisors (10470882).

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

10420638 is a wasteful number, since it uses less digits than its factorization.

10420638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 10420638 is about 3228.1012995258. The cubic root of 10420638 is about 218.4228668915.

The spelling of 10420638 in words is "ten million, four hundred twenty thousand, six hundred thirty-eight".