145133744 has 80 divisors (see below), whose sum is σ = 333312000. Its totient is φ = 59933952.

The previous prime is 145133731. The next prime is 145133753. The reversal of 145133744 is 447331541.

It is a self number, because there is not a number n which added to its sum of digits gives 145133744.

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, 415682 + ... + 416030.

It is an arithmetic number, because the mean of its divisors is an integer number (4166400).

Almost surely, 2^145133744 is an apocalyptic number.

145133744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145133744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166656000).

145133744 is an abundant number, since it is smaller than the sum of its proper divisors (188178256).

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

145133744 is a wasteful number, since it uses less digits than its factorization.

145133744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 484 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 145133744 is about 12047.1467161316. The cubic root of 145133744 is about 525.5202630967.

The spelling of 145133744 in words is "one hundred forty-five million, one hundred thirty-three thousand, seven hundred forty-four".