797809428 has 144 divisors (see below), whose sum is σ = 2264743936. Its totient is φ = 235146240.

The previous prime is 797809427. The next prime is 797809457. The reversal of 797809428 is 824908797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797809421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1842300 + ... + 1842732.

Almost surely, 2^797809428 is an apocalyptic number.

797809428 is a gapful number since it is divisible by the number (78) 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 797809428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132371968).

797809428 is an abundant number, since it is smaller than the sum of its proper divisors (1466934508).

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

797809428 is a wasteful number, since it uses less digits than its factorization.

797809428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 797809428 is about 28245.5204944076. The cubic root of 797809428 is about 927.4696809593.

The spelling of 797809428 in words is "seven hundred ninety-seven million, eight hundred nine thousand, four hundred twenty-eight".