774978040 has 16 divisors (see below), whose sum is σ = 1743700680. Its totient is φ = 309991200.

The previous prime is 774978037. The next prime is 774978047. The reversal of 774978040 is 40879477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774978047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9687186 + ... + 9687265.

Almost surely, 2^774978040 is an apocalyptic number.

It is an amenable number.

774978040 is an abundant number, since it is smaller than the sum of its proper divisors (968722640).

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

774978040 is a wasteful number, since it uses less digits than its factorization.

774978040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19374462 (or 19374458 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 774978040 is about 27838.4273981128. The cubic root of 774978040 is about 918.5365991169.

The spelling of 774978040 in words is "seven hundred seventy-four million, nine hundred seventy-eight thousand, forty".