773828378 has 4 divisors (see below), whose sum is σ = 1160742570. Its totient is φ = 386914188.

The previous prime is 773828369. The next prime is 773828437. The reversal of 773828378 is 873828377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873828377 = 29 ⋅30132013.

It can be written as a sum of positive squares in only one way, i.e., 635695369 + 138133009 = 25213^2 + 11753^2 .

It is a super-2 number, since 2×773828378² = 1197620717196221768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193457093 + ... + 193457096.

Almost surely, 2^773828378 is an apocalyptic number.

773828378 is a deficient number, since it is larger than the sum of its proper divisors (386914192).

773828378 is a wasteful number, since it uses less digits than its factorization.

773828378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386914191.

The product of its digits is 3161088, while the sum is 53.

The square root of 773828378 is about 27817.7709027880. The cubic root of 773828378 is about 918.0821650611.

Subtracting 773828378 from its reverse (873828377), we obtain a palindrome (99999999).

The spelling of 773828378 in words is "seven hundred seventy-three million, eight hundred twenty-eight thousand, three hundred seventy-eight".