145249884 has 36 divisors (see below), whose sum is σ = 395403736. Its totient is φ = 44692128.

The previous prime is 145249859. The next prime is 145249933. The reversal of 145249884 is 488942541.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154714 + ... + 155649.

Almost surely, 2^145249884 is an apocalyptic number.

It is an amenable number.

145249884 is an abundant number, since it is smaller than the sum of its proper divisors (250153852).

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

145249884 is a wasteful number, since it uses less digits than its factorization.

145249884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310386 (or 310381 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 145249884 is about 12051.9659807021. The cubic root of 145249884 is about 525.6604042947.

The spelling of 145249884 in words is "one hundred forty-five million, two hundred forty-nine thousand, eight hundred eighty-four".