784572426 has 64 divisors (see below), whose sum is σ = 1910845440. Its totient is φ = 236643120.

The previous prime is 784572421. The next prime is 784572431. The reversal of 784572426 is 624275487.

It is a happy number.

784572426 is a `hidden beast` number, since 78 + 4 + 572 + 4 + 2 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (784572421) and next prime (784572431).

It is not an unprimeable number, because it can be changed into a prime (784572421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129501 + ... + 135423.

It is an arithmetic number, because the mean of its divisors is an integer number (29856960).

Almost surely, 2^784572426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 784572426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955422720).

784572426 is an abundant number, since it is smaller than the sum of its proper divisors (1126273014).

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

784572426 is a wasteful number, since it uses less digits than its factorization.

784572426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6168 (or 6162 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 784572426 is about 28010.2200276970. The cubic root of 784572426 is about 922.3116199387.

The spelling of 784572426 in words is "seven hundred eighty-four million, five hundred seventy-two thousand, four hundred twenty-six".