526122240 has 432 divisors, whose sum is σ = 2061725568. Its totient is φ = 111919104.

The previous prime is 526122211. The next prime is 526122253. The reversal of 526122240 is 42221625.

It is a happy number.

It is a super-2 number, since 2×526122240² = 553609222845235200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 526122240.

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 47 ways as a sum of consecutive naturals, for example, 14219502 + ... + 14219538.

Almost surely, 2^526122240 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 526122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030862784).

526122240 is an abundant number, since it is smaller than the sum of its proper divisors (1535603328).

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

526122240 is a wasteful number, since it uses less digits than its factorization.

526122240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 526122240 is about 22937.3546861882. The cubic root of 526122240 is about 807.2887247717.

Adding to 526122240 its reverse (42221625), we get a palindrome (568343865).

The spelling of 526122240 in words is "five hundred twenty-six million, one hundred twenty-two thousand, two hundred forty".