145015444 has 12 divisors (see below), whose sum is σ = 290030944. Its totient is φ = 62149464.

The previous prime is 145015439. The next prime is 145015463. The reversal of 145015444 is 444510541.

145015444 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 5179123 = 145015444 / (1 + 4 + 5 + 0 + 1 + 5 + 4 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2589534 + ... + 2589589.

Almost surely, 2^145015444 is an apocalyptic number.

145015444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145015444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145015444 is a wasteful number, since it uses less digits than its factorization.

145015444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179134 (or 5179132 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 145015444 is about 12042.2358389130. The cubic root of 145015444 is about 525.3774386356.

Adding to 145015444 its reverse (444510541), we get a palindrome (589525985).

The spelling of 145015444 in words is "one hundred forty-five million, fifteen thousand, four hundred forty-four".