420569380 has 192 divisors, whose sum is σ = 1158925824. Its totient is φ = 125452800.

The previous prime is 420569371. The next prime is 420569393. The reversal of 420569380 is 83965024.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6894550 + ... + 6894610.

It is an arithmetic number, because the mean of its divisors is an integer number (6036072).

Almost surely, 2^420569380 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 420569380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579462912).

420569380 is an abundant number, since it is smaller than the sum of its proper divisors (738356444).

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

420569380 is a wasteful number, since it uses less digits than its factorization.

420569380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 420569380 is about 20507.7882766524. The cubic root of 420569380 is about 749.2254997337.

The spelling of 420569380 in words is "four hundred twenty million, five hundred sixty-nine thousand, three hundred eighty".