506894640 has 160 divisors (see below), whose sum is σ = 1853976576. Its totient is φ = 112112640.

The previous prime is 506894623. The next prime is 506894651. The reversal of 506894640 is 46498605.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 506894592 and 506894601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47214 + ... + 56946.

Almost surely, 2^506894640 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 506894640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926988288).

506894640 is an abundant number, since it is smaller than the sum of its proper divisors (1347081936).

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

506894640 is a wasteful number, since it uses less digits than its factorization.

506894640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9787 (or 9781 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 506894640 is about 22514.3207758973. The cubic root of 506894640 is about 797.3320709169.

The spelling of 506894640 in words is "five hundred six million, eight hundred ninety-four thousand, six hundred forty".