526509940 has 48 divisors (see below), whose sum is σ = 1216918080. Its totient is φ = 189754880.

The previous prime is 526509901. The next prime is 526509961. The reversal of 526509940 is 49905625.

It is a junction number, because it is equal to n+sod(n) for n = 526509893 and 526509902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14271 + ... + 35449.

It is an arithmetic number, because the mean of its divisors is an integer number (25352460).

Almost surely, 2^526509940 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 526509940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608459040).

526509940 is an abundant number, since it is smaller than the sum of its proper divisors (690408140).

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

526509940 is a wasteful number, since it uses less digits than its factorization.

526509940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21312 (or 21310 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 526509940 is about 22945.8044095211. The cubic root of 526509940 is about 807.4869733702.

The spelling of 526509940 in words is "five hundred twenty-six million, five hundred nine thousand, nine hundred forty".