145274844 has 48 divisors (see below), whose sum is σ = 398240640. Its totient is φ = 40635840.

The previous prime is 145274819. The next prime is 145274861. The reversal of 145274844 is 448472541.

It is a super-2 number, since 2×145274844² = 42209560598448672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40614 + ... + 44045.

It is an arithmetic number, because the mean of its divisors is an integer number (8296680).

Almost surely, 2^145274844 is an apocalyptic number.

It is an amenable number.

145274844 is an abundant number, since it is smaller than the sum of its proper divisors (252965796).

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

145274844 is a wasteful number, since it uses less digits than its factorization.

145274844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84690 (or 84688 counting only the distinct ones).

The product of its digits is 143360, while the sum is 39.

The square root of 145274844 is about 12053.0014519206. The cubic root of 145274844 is about 525.6905127117.

The spelling of 145274844 in words is "one hundred forty-five million, two hundred seventy-four thousand, eight hundred forty-four".