797955840 has 288 divisors, whose sum is σ = 3090528000. Its totient is φ = 193351680.

The previous prime is 797955833. The next prime is 797955869. The reversal of 797955840 is 48559797.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

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, 379111 + ... + 381209.

It is an arithmetic number, because the mean of its divisors is an integer number (10731000).

Almost surely, 2^797955840 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 797955840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545264000).

797955840 is an abundant number, since it is smaller than the sum of its proper divisors (2292572160).

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

797955840 is a wasteful number, since it uses less digits than its factorization.

797955840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The square root of 797955840 is about 28248.1121493101. The cubic root of 797955840 is about 927.5264131313.

The spelling of 797955840 in words is "seven hundred ninety-seven million, nine hundred fifty-five thousand, eight hundred forty".