775140400 has 60 divisors (see below), whose sum is σ = 1874288272. Its totient is φ = 308056320.

The previous prime is 775140389. The next prime is 775140413. The reversal of 775140400 is 4041577.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56629 + ... + 68971.

Almost surely, 2^775140400 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 775140400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937144136).

775140400 is an abundant number, since it is smaller than the sum of its proper divisors (1099147872).

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

775140400 is a wasteful number, since it uses less digits than its factorization.

775140400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12518 (or 12507 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 775140400 is about 27841.3433583942. The cubic root of 775140400 is about 918.6007399403.

Adding to 775140400 its reverse (4041577), we get a palindrome (779181977).

The spelling of 775140400 in words is "seven hundred seventy-five million, one hundred forty thousand, four hundred".