427545440 has 48 divisors (see below), whose sum is σ = 1154375712. Its totient is φ = 146586624.

The previous prime is 427545421. The next prime is 427545479. The reversal of 427545440 is 44545724.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 427545440.

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, 189749 + ... + 191988.

It is an arithmetic number, because the mean of its divisors is an integer number (24049494).

Almost surely, 2^427545440 is an apocalyptic number.

427545440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427545440 is an abundant number, since it is smaller than the sum of its proper divisors (726830272).

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

427545440 is a wasteful number, since it uses less digits than its factorization.

427545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381759 (or 381751 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 35.

The square root of 427545440 is about 20677.1719536304. The cubic root of 427545440 is about 753.3453170273.

The spelling of 427545440 in words is "four hundred twenty-seven million, five hundred forty-five thousand, four hundred forty".