427529880 has 128 divisors (see below), whose sum is σ = 1429747200. Its totient is φ = 113636736.

The previous prime is 427529863. The next prime is 427529891. The reversal of 427529880 is 88925724.

427529880 is a `hidden beast` number, since 42 + 7 + 529 + 8 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542847 + ... + 543633.

It is an arithmetic number, because the mean of its divisors is an integer number (11169900).

Almost surely, 2^427529880 is an apocalyptic number.

427529880 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 427529880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714873600).

427529880 is an abundant number, since it is smaller than the sum of its proper divisors (1002217320).

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

427529880 is a wasteful number, since it uses less digits than its factorization.

427529880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 427529880 is about 20676.7956898548. The cubic root of 427529880 is about 753.3361778854.

The spelling of 427529880 in words is "four hundred twenty-seven million, five hundred twenty-nine thousand, eight hundred eighty".