145233240 has 64 divisors (see below), whose sum is σ = 439810560. Its totient is φ = 38363520.

The previous prime is 145233239. The next prime is 145233259. The reversal of 145233240 is 42332541.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 145233240.

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, 7185 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (6872040).

Almost surely, 2^145233240 is an apocalyptic number.

145233240 is a gapful number since it is divisible by the number (10) 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 145233240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219905280).

145233240 is an abundant number, since it is smaller than the sum of its proper divisors (294577320).

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

145233240 is a wasteful number, since it uses less digits than its factorization.

145233240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11432 (or 11428 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 145233240 is about 12051.2754511711. The cubic root of 145233240 is about 525.6403252747.

Adding to 145233240 its reverse (42332541), we get a palindrome (187565781).

The spelling of 145233240 in words is "one hundred forty-five million, two hundred thirty-three thousand, two hundred forty".