427868688 has 80 divisors (see below), whose sum is σ = 1199159360. Its totient is φ = 130678272.

The previous prime is 427868687. The next prime is 427868689. The reversal of 427868688 is 886868724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (427868687) and next prime (427868689).

It is a super-2 number, since 2×427868688² = 366143228341682688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427868687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84270 + ... + 89202.

It is an arithmetic number, because the mean of its divisors is an integer number (14989492).

Almost surely, 2^427868688 is an apocalyptic number.

427868688 is a gapful number since it is divisible by the number (48) 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 427868688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599579680).

427868688 is an abundant number, since it is smaller than the sum of its proper divisors (771290672).

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

427868688 is a wasteful number, since it uses less digits than its factorization.

427868688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096 (or 5090 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 57.

The square root of 427868688 is about 20684.9870195753. The cubic root of 427868688 is about 753.5351261089.

The spelling of 427868688 in words is "four hundred twenty-seven million, eight hundred sixty-eight thousand, six hundred eighty-eight".