774842420 has 48 divisors (see below), whose sum is σ = 1868529600. Its totient is φ = 266929920.

The previous prime is 774842417. The next prime is 774842437. The reversal of 774842420 is 24248477.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88505 + ... + 96864.

It is an arithmetic number, because the mean of its divisors is an integer number (38927700).

Almost surely, 2^774842420 is an apocalyptic number.

It is an amenable number.

774842420 is an abundant number, since it is smaller than the sum of its proper divisors (1093687180).

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

774842420 is a wasteful number, since it uses less digits than its factorization.

774842420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185408 (or 185406 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 38.

The square root of 774842420 is about 27835.9914499197. The cubic root of 774842420 is about 918.4830151466.

The spelling of 774842420 in words is "seven hundred seventy-four million, eight hundred forty-two thousand, four hundred twenty".