526015980 has 216 divisors, whose sum is σ = 1937531232. Its totient is φ = 114960384.

The previous prime is 526015961. The next prime is 526015981. The reversal of 526015980 is 89510625.

It is a happy number.

526015980 is a `hidden beast` number, since 5 + 2 + 60 + 1 + 598 + 0 = 666.

It is a super-2 number, since 2×526015980² = 553385622430720800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (526015981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 201564 + ... + 204156.

It is an arithmetic number, because the mean of its divisors is an integer number (8970052).

Almost surely, 2^526015980 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 526015980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968765616).

526015980 is an abundant number, since it is smaller than the sum of its proper divisors (1411515252).

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

526015980 is a wasteful number, since it uses less digits than its factorization.

526015980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 526015980 is about 22935.0382602689. The cubic root of 526015980 is about 807.2343722093.

The spelling of 526015980 in words is "five hundred twenty-six million, fifteen thousand, nine hundred eighty".