4636478 has 72 divisors (see below), whose sum is σ = 9824976. Its totient is φ = 1626240.

The previous prime is 4636477. The next prime is 4636519. The reversal of 4636478 is 8746364.

It is a happy number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4³ + 6² + 3⁹ + 6⁸ + 4⁷ + 7⁷ + 8⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4636477) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 201575 + ... + 201597.

It is an arithmetic number, because the mean of its divisors is an integer number (136458).

Almost surely, 2^4636478 is an apocalyptic number.

4636478 is an abundant number, since it is smaller than the sum of its proper divisors (5188498).

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

4636478 is a wasteful number, since it uses less digits than its factorization.

4636478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 60 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 4636478 is about 2153.2482439329. The cubic root of 4636478 is about 166.7488066226.

The spelling of 4636478 in words is "four million, six hundred thirty-six thousand, four hundred seventy-eight".