771172048 has 20 divisors (see below), whose sum is σ = 1522338948. Its totient is φ = 378310400.

The previous prime is 771172043. The next prime is 771172079. The reversal of 771172048 is 840271177.

It can be written as a sum of positive squares in 2 ways, for example, as 564157504 + 207014544 = 23752^2 + 14388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 771171998 and 771172016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771172043) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 453853 + ... + 455548.

Almost surely, 2^771172048 is an apocalyptic number.

It is an amenable number.

771172048 is a deficient number, since it is larger than the sum of its proper divisors (751166900).

771172048 is a wasteful number, since it uses less digits than its factorization.

771172048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909462 (or 909456 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 771172048 is about 27769.9846597005. The cubic root of 771172048 is about 917.0304568332.

The spelling of 771172048 in words is "seven hundred seventy-one million, one hundred seventy-two thousand, forty-eight".