145768444 has 24 divisors (see below), whose sum is σ = 263496240. Its totient is φ = 70521984.

The previous prime is 145768429. The next prime is 145768451. The reversal of 145768444 is 444867541.

It is a happy number.

It is a super-2 number, since 2×145768444² = 42496878532362272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 145768444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10767 + ... + 20185.

It is an arithmetic number, because the mean of its divisors is an integer number (10979010).

Almost surely, 2^145768444 is an apocalyptic number.

It is an amenable number.

145768444 is a deficient number, since it is larger than the sum of its proper divisors (117727796).

145768444 is a wasteful number, since it uses less digits than its factorization.

145768444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549 (or 9547 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 145768444 is about 12073.4603159161. The cubic root of 145768444 is about 526.2852188202.

The spelling of 145768444 in words is "one hundred forty-five million, seven hundred sixty-eight thousand, four hundred forty-four".