791228438 has 192 divisors, whose sum is σ = 1773219840. Its totient is φ = 256608000.

The previous prime is 791228437. The next prime is 791228441. The reversal of 791228438 is 834822197.

Its product of digits (193536) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791228437) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 12970928 + ... + 12970988.

It is an arithmetic number, because the mean of its divisors is an integer number (9235520).

Almost surely, 2^791228438 is an apocalyptic number.

791228438 is an abundant number, since it is smaller than the sum of its proper divisors (981991402).

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

791228438 is a wasteful number, since it uses less digits than its factorization.

791228438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 144 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 791228438 is about 28128.7830877911. The cubic root of 791228438 is about 924.9124584307.

The spelling of 791228438 in words is "seven hundred ninety-one million, two hundred twenty-eight thousand, four hundred thirty-eight".