778472 has 32 divisors (see below), whose sum is σ = 1562880. Its totient is φ = 362880.

The previous prime is 778469. The next prime is 778507. The reversal of 778472 is 274877.

778472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10628 + ... + 10700.

It is an arithmetic number, because the mean of its divisors is an integer number (48840).

2⁷⁷⁸⁴⁷² is an apocalyptic number.

It is an amenable number.

778472 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

778472 is a wasteful number, since it uses less digits than its factorization.

778472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 149 counting only the distinct ones).

The product of its digits is 21952, while the sum is 35.

The square root of 778472 is about 882.3106029058. The cubic root of 778472 is about 91.9914925971.

The spelling of 778472 in words is "seven hundred seventy-eight thousand, four hundred seventy-two".