427545756 has 72 divisors (see below), whose sum is σ = 1218418320. Its totient is φ = 129555360.

The previous prime is 427545737. The next prime is 427545757. The reversal of 427545756 is 657545724.

427545756 is a `hidden beast` number, since 4 + 2 + 75 + 4 + 575 + 6 = 666.

It is a super-2 number, since 2×427545756² = 365590746947223072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427545757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3291 + ... + 29426.

Almost surely, 2^427545756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427545756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609209160).

427545756 is an abundant number, since it is smaller than the sum of its proper divisors (790872564).

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

427545756 is a wasteful number, since it uses less digits than its factorization.

427545756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32752 (or 32733 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 45.

The square root of 427545756 is about 20677.1795949061. The cubic root of 427545756 is about 753.3455026271.

The spelling of 427545756 in words is "four hundred twenty-seven million, five hundred forty-five thousand, seven hundred fifty-six".