427866240 has 128 divisors (see below), whose sum is σ = 1423267200. Its totient is φ = 109125632.

The previous prime is 427866233. The next prime is 427866259. The reversal of 427866240 is 42668724.

It is a tau number, because it is divible by the number of its divisors (128).

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, 39316 + ... + 49004.

It is an arithmetic number, because the mean of its divisors is an integer number (11119275).

Almost surely, 2^427866240 is an apocalyptic number.

427866240 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 427866240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711633600).

427866240 is an abundant number, since it is smaller than the sum of its proper divisors (995400960).

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

427866240 is a wasteful number, since it uses less digits than its factorization.

427866240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9734 (or 9722 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 427866240 is about 20684.9278461396. The cubic root of 427866240 is about 753.5336890188.

The spelling of 427866240 in words is "four hundred twenty-seven million, eight hundred sixty-six thousand, two hundred forty".