784397952 has 384 divisors, whose sum is σ = 2687904000. Its totient is φ = 224280576.

The previous prime is 784397947. The next prime is 784397981. The reversal of 784397952 is 259793487.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9929049 + ... + 9929127.

It is an arithmetic number, because the mean of its divisors is an integer number (6999750).

Almost surely, 2^784397952 is an apocalyptic number.

784397952 is a gapful number since it is divisible by the number (72) 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 784397952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343952000).

784397952 is an abundant number, since it is smaller than the sum of its proper divisors (1903506048).

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

784397952 is a wasteful number, since it uses less digits than its factorization.

784397952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 114 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 784397952 is about 28007.1053841699. The cubic root of 784397952 is about 922.2432466769.

The spelling of 784397952 in words is "seven hundred eighty-four million, three hundred ninety-seven thousand, nine hundred fifty-two".