420622152 has 64 divisors (see below), whose sum is σ = 1113888000. Its totient is φ = 131989824.

The previous prime is 420622117. The next prime is 420622187. The reversal of 420622152 is 251226024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (420622117) and next prime (420622187).

It is a super-2 number, since 2×420622152² = 353845989506222208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71499 + ... + 77157.

It is an arithmetic number, because the mean of its divisors is an integer number (17404500).

Almost surely, 2^420622152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420622152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556944000).

420622152 is an abundant number, since it is smaller than the sum of its proper divisors (693265848).

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

420622152 is a wasteful number, since it uses less digits than its factorization.

420622152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850 (or 5846 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 420622152 is about 20509.0748694328. The cubic root of 420622152 is about 749.2568354073.

Adding to 420622152 its reverse (251226024), we get a palindrome (671848176).

The spelling of 420622152 in words is "four hundred twenty million, six hundred twenty-two thousand, one hundred fifty-two".