427646724 has 12 divisors (see below), whose sum is σ = 997842384. Its totient is φ = 142548904.

The previous prime is 427646717. The next prime is 427646741.

It is a happy number.

427646724 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17818602 + ... + 17818625.

It is an arithmetic number, because the mean of its divisors is an integer number (83153532).

Almost surely, 2^427646724 is an apocalyptic number.

It is an amenable number.

427646724 is an abundant number, since it is smaller than the sum of its proper divisors (570195660).

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

427646724 is a wasteful number, since it uses less digits than its factorization.

427646724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35637234 (or 35637232 counting only the distinct ones).

The product of its digits is 451584, while the sum is 42.

The square root of 427646724 is about 20679.6209829871. The cubic root of 427646724 is about 753.4048006092.

The spelling of 427646724 in words is "four hundred twenty-seven million, six hundred forty-six thousand, seven hundred twenty-four".