527421720 has 128 divisors (see below), whose sum is σ = 1822487040. Its totient is φ = 119608320.

The previous prime is 527421691. The next prime is 527421749. The reversal of 527421720 is 27124725.

It is an interprime number because it is at equal distance from previous prime (527421691) and next prime (527421749).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 107644 + ... + 112436.

It is an arithmetic number, because the mean of its divisors is an integer number (14238180).

Almost surely, 2^527421720 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 527421720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911243520).

527421720 is an abundant number, since it is smaller than the sum of its proper divisors (1295065320).

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

527421720 is a wasteful number, since it uses less digits than its factorization.

527421720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945 (or 4941 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 527421720 is about 22965.6639355365. The cubic root of 527421720 is about 807.9528245829.

The spelling of 527421720 in words is "five hundred twenty-seven million, four hundred twenty-one thousand, seven hundred twenty".