772917140 has 12 divisors (see below), whose sum is σ = 1623126036. Its totient is φ = 309166848.

The previous prime is 772917137. The next prime is 772917143. The reversal of 772917140 is 41719277.

It is an interprime number because it is at equal distance from previous prime (772917137) and next prime (772917143).

It can be written as a sum of positive squares in 2 ways, for example, as 116942596 + 655974544 = 10814^2 + 25612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 772917094 and 772917103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772917143) 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, 19322909 + ... + 19322948.

It is an arithmetic number, because the mean of its divisors is an integer number (135260503).

Almost surely, 2^772917140 is an apocalyptic number.

It is an amenable number.

772917140 is an abundant number, since it is smaller than the sum of its proper divisors (850208896).

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

772917140 is a wasteful number, since it uses less digits than its factorization.

772917140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38645866 (or 38645864 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 772917140 is about 27801.3873754530. The cubic root of 772917140 is about 917.7216544808.

The spelling of 772917140 in words is "seven hundred seventy-two million, nine hundred seventeen thousand, one hundred forty".