427543720 has 32 divisors (see below), whose sum is σ = 967304520. Its totient is φ = 170069760.

The previous prime is 427543703. The next prime is 427543733. The reversal of 427543720 is 27345724.

It can be written as a sum of positive squares in 4 ways, for example, as 356680996 + 70862724 = 18886^2 + 8418^2 .

It is a super-2 number, since 2×427543720² = 365587265022876800, which contains 22 as substring.

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, 22287 + ... + 36766.

Almost surely, 2^427543720 is an apocalyptic number.

427543720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427543720 is an abundant number, since it is smaller than the sum of its proper divisors (539760800).

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

427543720 is a wasteful number, since it uses less digits than its factorization.

427543720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59245 (or 59241 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 427543720 is about 20677.1303618273. The cubic root of 427543720 is about 753.3443067988.

The spelling of 427543720 in words is "four hundred twenty-seven million, five hundred forty-three thousand, seven hundred twenty".