775132920 has 96 divisors (see below), whose sum is σ = 2522847600. Its totient is φ = 206401536.

The previous prime is 775132903. The next prime is 775132927. The reversal of 775132920 is 29231577.

775132920 = T₃₃₂₁ + T₃₃₂₂ + ... + T₃₄₅₅.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775132927) 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 23 ways as a sum of consecutive naturals, for example, 365784 + ... + 367896.

Almost surely, 2^775132920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775132920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261423800).

775132920 is an abundant number, since it is smaller than the sum of its proper divisors (1747714680).

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

775132920 is a wasteful number, since it uses less digits than its factorization.

775132920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149 (or 3142 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 775132920 is about 27841.2090254716. The cubic root of 775132920 is about 918.5977851398.

The spelling of 775132920 in words is "seven hundred seventy-five million, one hundred thirty-two thousand, nine hundred twenty".