420632215 has 8 divisors (see below), whose sum is σ = 508147200. Its totient is φ = 334246752.

The previous prime is 420632197. The next prime is 420632227. The reversal of 420632215 is 512236024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420632215 - 2²¹ = 418535063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420632215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281559 + ... + 283048.

It is an arithmetic number, because the mean of its divisors is an integer number (63518400).

Almost surely, 2^420632215 is an apocalyptic number.

420632215 is a deficient number, since it is larger than the sum of its proper divisors (87514985).

420632215 is a wasteful number, since it uses less digits than its factorization.

420632215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564761.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 420632215 is about 20509.3201983879. The cubic root of 420632215 is about 749.2628104543.

Adding to 420632215 its reverse (512236024), we get a palindrome (932868239).

The spelling of 420632215 in words is "four hundred twenty million, six hundred thirty-two thousand, two hundred fifteen".