420250626 has 64 divisors (see below), whose sum is σ = 990000000. Its totient is φ = 131772096.

The previous prime is 420250619. The next prime is 420250627. The reversal of 420250626 is 626052024.

It is a super-2 number, since 2×420250626² = 353221177306783752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 420250626.

It is not an unprimeable number, because it can be changed into a prime (420250627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151500 + ... + 154248.

It is an arithmetic number, because the mean of its divisors is an integer number (15468750).

Almost surely, 2^420250626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420250626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495000000).

420250626 is an abundant number, since it is smaller than the sum of its proper divisors (569749374).

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

420250626 is a wasteful number, since it uses less digits than its factorization.

420250626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 420250626 is about 20500.0152682870. The cubic root of 420250626 is about 749.0361699060.

The spelling of 420250626 in words is "four hundred twenty million, two hundred fifty thousand, six hundred twenty-six".