775078130 has 8 divisors (see below), whose sum is σ = 1395140652. Its totient is φ = 310031248.

The previous prime is 775078111. The next prime is 775078133. The reversal of 775078130 is 31870577.

It can be written as a sum of positive squares in 2 ways, for example, as 629658649 + 145419481 = 25093^2 + 12059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×775078130² = 1201492215208593800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (775078133) 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, 38753897 + ... + 38753916.

Almost surely, 2^775078130 is an apocalyptic number.

775078130 is a deficient number, since it is larger than the sum of its proper divisors (620062522).

775078130 is a wasteful number, since it uses less digits than its factorization.

775078130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77507820.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 775078130 is about 27840.2250350100. The cubic root of 775078130 is about 918.5761410419.

The spelling of 775078130 in words is "seven hundred seventy-five million, seventy-eight thousand, one hundred thirty".