427637780 has 24 divisors (see below), whose sum is σ = 899620008. Its totient is φ = 170754048.

The previous prime is 427637773. The next prime is 427637801. The reversal of 427637780 is 87736724.

It can be written as a sum of positive squares in 4 ways, for example, as 279090436 + 148547344 = 16706^2 + 12188^2 .

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, 6989 + ... + 30068.

It is an arithmetic number, because the mean of its divisors is an integer number (37484167).

Almost surely, 2^427637780 is an apocalyptic number.

It is an amenable number.

427637780 is an abundant number, since it is smaller than the sum of its proper divisors (471982228).

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

427637780 is a wasteful number, since it uses less digits than its factorization.

427637780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37643 (or 37641 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 427637780 is about 20679.4047303108. The cubic root of 427637780 is about 753.3995482213.

The spelling of 427637780 in words is "four hundred twenty-seven million, six hundred thirty-seven thousand, seven hundred eighty".