428670240 has 96 divisors (see below), whose sum is σ = 1355175360. Its totient is φ = 113900544.

The previous prime is 428670217. The next prime is 428670269. The reversal of 428670240 is 42076824.

It is a tau number, because it is divible by the number of its divisors (96).

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, 145906 + ... + 148814.

It is an arithmetic number, because the mean of its divisors is an integer number (14116410).

Almost surely, 2^428670240 is an apocalyptic number.

428670240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428670240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677587680).

428670240 is an abundant number, since it is smaller than the sum of its proper divisors (926505120).

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

428670240 is a wasteful number, since it uses less digits than its factorization.

428670240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 428670240 is about 20704.3531654577. The cubic root of 428670240 is about 754.0053800506.

The spelling of 428670240 in words is "four hundred twenty-eight million, six hundred seventy thousand, two hundred forty".