420624220 has 24 divisors (see below), whose sum is σ = 883739808. Its totient is φ = 168168000.

The previous prime is 420624209. The next prime is 420624221. The reversal of 420624220 is 22426024.

It is a junction number, because it is equal to n+sod(n) for n = 420624191 and 420624200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420624221) 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, 53545 + ... + 60895.

It is an arithmetic number, because the mean of its divisors is an integer number (36822492).

Almost surely, 2^420624220 is an apocalyptic number.

It is an amenable number.

420624220 is an abundant number, since it is smaller than the sum of its proper divisors (463115588).

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

420624220 is a wasteful number, since it uses less digits than its factorization.

420624220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221 (or 10219 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 420624220 is about 20509.1252860769. The cubic root of 420624220 is about 749.2580633190.

The spelling of 420624220 in words is "four hundred twenty million, six hundred twenty-four thousand, two hundred twenty".