77250890 has 16 divisors (see below), whose sum is σ = 147231432. Its totient is φ = 29082624.

The previous prime is 77250889. The next prime is 77250913. The reversal of 77250890 is 9805277.

It can be written as a sum of positive squares in 4 ways, for example, as 46526041 + 30724849 = 6821^2 + 5543^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227039 + ... + 227378.

Almost surely, 2^77250890 is an apocalyptic number.

77250890 is a deficient number, since it is larger than the sum of its proper divisors (69980542).

77250890 is a wasteful number, since it uses less digits than its factorization.

77250890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454441.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 77250890 is about 8789.2485458087. The cubic root of 77250890 is about 425.8936490157.

The spelling of 77250890 in words is "seventy-seven million, two hundred fifty thousand, eight hundred ninety".