145402244 has 24 divisors (see below), whose sum is σ = 275278080. Its totient is φ = 66802464.

The previous prime is 145402217. The next prime is 145402273. The reversal of 145402244 is 442204541.

It is a super-2 number, since 2×145402244² = 42283625120471072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5327 + ... + 17865.

It is an arithmetic number, because the mean of its divisors is an integer number (11469920).

Almost surely, 2^145402244 is an apocalyptic number.

It is an amenable number.

145402244 is a deficient number, since it is larger than the sum of its proper divisors (129875836).

145402244 is a wasteful number, since it uses less digits than its factorization.

145402244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12779 (or 12777 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 145402244 is about 12058.2852844009. The cubic root of 145402244 is about 525.8441373896.

Adding to 145402244 its reverse (442204541), we get a palindrome (587606785).

The spelling of 145402244 in words is "one hundred forty-five million, four hundred two thousand, two hundred forty-four".