427583780 has 48 divisors (see below), whose sum is σ = 972121584. Its totient is φ = 157040640.

The previous prime is 427583759. The next prime is 427583789. The reversal of 427583780 is 87385724.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 67798756 + 359785024 = 8234^2 + 18968^2 .

It is not an unprimeable number, because it can be changed into a prime (427583789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45920 + ... + 54440.

It is an arithmetic number, because the mean of its divisors is an integer number (20252533).

Almost surely, 2^427583780 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 427583780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486060792).

427583780 is an abundant number, since it is smaller than the sum of its proper divisors (544537804).

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

427583780 is a wasteful number, since it uses less digits than its factorization.

427583780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8736 (or 8734 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 427583780 is about 20678.0990422234. The cubic root of 427583780 is about 753.3678350206.

The spelling of 427583780 in words is "four hundred twenty-seven million, five hundred eighty-three thousand, seven hundred eighty".