421632650 has 12 divisors (see below), whose sum is σ = 784236822. Its totient is φ = 168653040.

The previous prime is 421632641. The next prime is 421632661. The reversal of 421632650 is 56236124.

It can be written as a sum of positive squares in 3 ways, for example, as 390418081 + 31214569 = 19759^2 + 5587^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4216277 + ... + 4216376.

Almost surely, 2^421632650 is an apocalyptic number.

421632650 is a deficient number, since it is larger than the sum of its proper divisors (362604172).

421632650 is a wasteful number, since it uses less digits than its factorization.

421632650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432665 (or 8432660 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 421632650 is about 20533.6954784082. The cubic root of 421632650 is about 749.8563576761.

Adding to 421632650 its reverse (56236124), we get a palindrome (477868774).

The spelling of 421632650 in words is "four hundred twenty-one million, six hundred thirty-two thousand, six hundred fifty".