427806816 has 36 divisors (see below), whose sum is σ = 1123525116. Its totient is φ = 142534720.

The previous prime is 427806809. The next prime is 427806823. The reversal of 427806816 is 618608724.

It is an interprime number because it is at equal distance from previous prime (427806809) and next prime (427806823).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201601 + ... + 203711.

It is an arithmetic number, because the mean of its divisors is an integer number (31209031).

Almost surely, 2^427806816 is an apocalyptic number.

It is an amenable number.

427806816 is an abundant number, since it is smaller than the sum of its proper divisors (695718300).

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

427806816 is an frugal number, since it uses more digits than its factorization.

427806816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235 (or 2116 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 427806816 is about 20683.4913880612. The cubic root of 427806816 is about 753.4988026806.

The spelling of 427806816 in words is "four hundred twenty-seven million, eight hundred six thousand, eight hundred sixteen".