424215020 has 24 divisors (see below), whose sum is σ = 897359904. Its totient is φ = 168446336.

The previous prime is 424215007. The next prime is 424215037. The reversal of 424215020 is 20512424.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 424214983 and 424215001.

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, 74672 + ... + 80151.

It is an arithmetic number, because the mean of its divisors is an integer number (37389996).

Almost surely, 2^424215020 is an apocalyptic number.

It is an amenable number.

424215020 is an abundant number, since it is smaller than the sum of its proper divisors (473144884).

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

424215020 is a wasteful number, since it uses less digits than its factorization.

424215020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154969 (or 154967 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 424215020 is about 20596.4807673544. The cubic root of 424215020 is about 751.3841225535.

Adding to 424215020 its reverse (20512424), we get a palindrome (444727444).

The spelling of 424215020 in words is "four hundred twenty-four million, two hundred fifteen thousand, twenty".