427271880 has 128 divisors (see below), whose sum is σ = 1551156480. Its totient is φ = 91914240.

The previous prime is 427271869. The next prime is 427271891. The reversal of 427271880 is 88172724.

It is an interprime number because it is at equal distance from previous prime (427271869) and next prime (427271891).

It is a super-2 number, since 2×427271880² = 365122518877468800, which contains 22 as substring.

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, 681 + ... + 29240.

It is an arithmetic number, because the mean of its divisors is an integer number (12118410).

Almost surely, 2^427271880 is an apocalyptic number.

427271880 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 427271880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775578240).

427271880 is an abundant number, since it is smaller than the sum of its proper divisors (1123884600).

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

427271880 is a wasteful number, since it uses less digits than its factorization.

427271880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29959 (or 29955 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 427271880 is about 20670.5558706098. Note that the first 3 decimals coincide. The cubic root of 427271880 is about 753.1846096537.

The spelling of 427271880 in words is "four hundred twenty-seven million, two hundred seventy-one thousand, eight hundred eighty".