145523736 has 128 divisors (see below), whose sum is σ = 433440000. Its totient is φ = 45100800.

The previous prime is 145523731. The next prime is 145523759. The reversal of 145523736 is 637325541.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 145523736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145523731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241836 + ... + 242436.

It is an arithmetic number, because the mean of its divisors is an integer number (3386250).

Almost surely, 2^145523736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145523736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216720000).

145523736 is an abundant number, since it is smaller than the sum of its proper divisors (287916264).

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

145523736 is a wasteful number, since it uses less digits than its factorization.

145523736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 684 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 145523736 is about 12063.3219305463. The cubic root of 145523736 is about 525.9905543659.

The spelling of 145523736 in words is "one hundred forty-five million, five hundred twenty-three thousand, seven hundred thirty-six".