145288338 has 64 divisors (see below), whose sum is σ = 323616384. Its totient is φ = 43200000.

The previous prime is 145288337. The next prime is 145288411. The reversal of 145288338 is 833882541.

It is a super-2 number, since 2×145288338² = 42217402317604488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145288338.

It is not an unprimeable number, because it can be changed into a prime (145288331) 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, 578713 + ... + 578963.

It is an arithmetic number, because the mean of its divisors is an integer number (5056506).

Almost surely, 2^145288338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145288338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161808192).

145288338 is an abundant number, since it is smaller than the sum of its proper divisors (178328046).

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

145288338 is a wasteful number, since it uses less digits than its factorization.

145288338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

The product of its digits is 184320, while the sum is 42.

The square root of 145288338 is about 12053.5612165036. The cubic root of 145288338 is about 525.7067886384.

The spelling of 145288338 in words is "one hundred forty-five million, two hundred eighty-eight thousand, three hundred thirty-eight".