974126520 has 192 divisors, whose sum is σ = 3450434400. Its totient is φ = 244408320.

The previous prime is 974126509. The next prime is 974126563. The reversal of 974126520 is 25621479.

974126520 is a `hidden beast` number, since 9 + 7 + 4 + 126 + 520 = 666.

It is a Cunningham number, because it is equal to 31211²-1.

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 310560 + ... + 313680.

Almost surely, 2^974126520 is an apocalyptic number.

974126520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 974126520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725217200).

974126520 is an abundant number, since it is smaller than the sum of its proper divisors (2476307880).

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

974126520 is a wasteful number, since it uses less digits than its factorization.

974126520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175 (or 3148 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 974126520 is about 31210.9999839800. Note that the first 4 decimals coincide. The cubic root of 974126520 is about 991.3000368053.

Adding to 974126520 its reverse (25621479), we get a palindrome (999747999).

The spelling of 974126520 in words is "nine hundred seventy-four million, one hundred twenty-six thousand, five hundred twenty".