772390 has 8 divisors (see below), whose sum is σ = 1390320. Its totient is φ = 308952.

The previous prime is 772381. The next prime is 772391. The reversal of 772390 is 93277.

It is a happy number.

772390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772391) 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, 38610 + ... + 38629.

It is an arithmetic number, because the mean of its divisors is an integer number (173790).

2⁷⁷²³⁹⁰ is an apocalyptic number.

772390 is a deficient number, since it is larger than the sum of its proper divisors (617930).

772390 is a wasteful number, since it uses less digits than its factorization.

772390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77246.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 772390 is about 878.8572125209. The cubic root of 772390 is about 91.7512974150.

The spelling of 772390 in words is "seven hundred seventy-two thousand, three hundred ninety".