427884280 has 32 divisors (see below), whose sum is σ = 988763040. Its totient is φ = 166527360.

The previous prime is 427884257. The next prime is 427884293. The reversal of 427884280 is 82488724.

It is a super-2 number, since 2×427884280² = 366169914142236800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143076 + ... + 146035.

It is an arithmetic number, because the mean of its divisors is an integer number (30898845).

Almost surely, 2^427884280 is an apocalyptic number.

427884280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427884280 is an abundant number, since it is smaller than the sum of its proper divisors (560878760).

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

427884280 is a wasteful number, since it uses less digits than its factorization.

427884280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289159 (or 289155 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 43.

The square root of 427884280 is about 20685.3639078456. The cubic root of 427884280 is about 753.5442792107.

The spelling of 427884280 in words is "four hundred twenty-seven million, eight hundred eighty-four thousand, two hundred eighty".