774367920 has 120 divisors (see below), whose sum is σ = 2644808400. Its totient is φ = 202987008.

The previous prime is 774367903. The next prime is 774367927. The reversal of 774367920 is 29763477.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (774367927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33366 + ... + 51594.

It is an arithmetic number, because the mean of its divisors is an integer number (22040070).

Almost surely, 2^774367920 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 774367920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322404200).

774367920 is an abundant number, since it is smaller than the sum of its proper divisors (1870440480).

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

774367920 is a wasteful number, since it uses less digits than its factorization.

774367920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18307 (or 18298 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 774367920 is about 27827.4670065387. The cubic root of 774367920 is about 918.2954891961.

The spelling of 774367920 in words is "seven hundred seventy-four million, three hundred sixty-seven thousand, nine hundred twenty".