427778120 has 64 divisors (see below), whose sum is σ = 1200009600. Its totient is φ = 133332480.

The previous prime is 427778047. The next prime is 427778137. The reversal of 427778120 is 21877724.

It is a happy number.

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, 66365 + ... + 72524.

It is an arithmetic number, because the mean of its divisors is an integer number (18750150).

Almost surely, 2^427778120 is an apocalyptic number.

427778120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427778120 is an abundant number, since it is smaller than the sum of its proper divisors (772231480).

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

427778120 is a wasteful number, since it uses less digits than its factorization.

427778120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138918 (or 138914 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 427778120 is about 20682.7976830989. The cubic root of 427778120 is about 753.4819548229.

The spelling of 427778120 in words is "four hundred twenty-seven million, seven hundred seventy-eight thousand, one hundred twenty".