145378244 has 24 divisors (see below), whose sum is σ = 277911648. Its totient is φ = 65992640.

The previous prime is 145378243. The next prime is 145378267. The reversal of 145378244 is 442873541.

It is a super-2 number, since 2×145378244² = 42269667657047072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145378198 and 145378207.

It is not an unprimeable number, because it can be changed into a prime (145378241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40199 + ... + 43665.

It is an arithmetic number, because the mean of its divisors is an integer number (11579652).

Almost surely, 2^145378244 is an apocalyptic number.

It is an amenable number.

145378244 is a deficient number, since it is larger than the sum of its proper divisors (132533404).

145378244 is a wasteful number, since it uses less digits than its factorization.

145378244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435 (or 4433 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 145378244 is about 12057.2900769617. The cubic root of 145378244 is about 525.8152039670.

It can be divided in two parts, 1453 and 78244, that added together give a palindrome (79697).

The spelling of 145378244 in words is "one hundred forty-five million, three hundred seventy-eight thousand, two hundred forty-four".