145777722 has 32 divisors (see below), whose sum is σ = 302702400. Its totient is φ = 46747008.

The previous prime is 145777721. The next prime is 145777741. The reversal of 145777722 is 227777541.

145777722 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145777722² = 42502288463018568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145777721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52054 + ... + 54782.

It is an arithmetic number, because the mean of its divisors is an integer number (9459450).

Almost surely, 2^145777722 is an apocalyptic number.

145777722 is an abundant number, since it is smaller than the sum of its proper divisors (156924678).

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

145777722 is a wasteful number, since it uses less digits than its factorization.

145777722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070.

The product of its digits is 192080, while the sum is 42.

The square root of 145777722 is about 12073.8445409902. The cubic root of 145777722 is about 526.2963844070.

The spelling of 145777722 in words is "one hundred forty-five million, seven hundred seventy-seven thousand, seven hundred twenty-two".