778016452 has 6 divisors (see below), whose sum is σ = 1361528798. Its totient is φ = 389008224.

The previous prime is 778016431. The next prime is 778016471. The reversal of 778016452 is 254610877.

It can be written as a sum of positive squares in only one way, i.e., 679332096 + 98684356 = 26064^2 + 9934^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97252053 + ... + 97252060.

Almost surely, 2^778016452 is an apocalyptic number.

It is an amenable number.

778016452 is a deficient number, since it is larger than the sum of its proper divisors (583512346).

778016452 is a wasteful number, since it uses less digits than its factorization.

778016452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194504117 (or 194504115 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 778016452 is about 27892.9462767919. The cubic root of 778016452 is about 919.7354516610.

The spelling of 778016452 in words is "seven hundred seventy-eight million, sixteen thousand, four hundred fifty-two".