145812244 has 24 divisors (see below), whose sum is σ = 260458688. Its totient is φ = 71409600.

The previous prime is 145812239. The next prime is 145812253. The reversal of 145812244 is 442218541.

It is a super-2 number, since 2×145812244² = 42522421000631072, which contains 22 as substring.

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, 42439 + ... + 45745.

Almost surely, 2^145812244 is an apocalyptic number.

It is an amenable number.

145812244 is a deficient number, since it is larger than the sum of its proper divisors (114646444).

145812244 is a wasteful number, since it uses less digits than its factorization.

145812244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535 (or 3533 counting only the distinct ones).

The product of its digits is 10240, while the sum is 31.

The square root of 145812244 is about 12075.2740755645. The cubic root of 145812244 is about 526.3379256648.

The spelling of 145812244 in words is "one hundred forty-five million, eight hundred twelve thousand, two hundred forty-four".