145338280 has 32 divisors (see below), whose sum is σ = 334620000. Its totient is φ = 56782656.

The previous prime is 145338251. The next prime is 145338289. The reversal of 145338280 is 82833541.

It is a happy number.

145338280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145338280² = 42246431266716800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145338289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40530 + ... + 43969.

It is an arithmetic number, because the mean of its divisors is an integer number (10456875).

Almost surely, 2^145338280 is an apocalyptic number.

145338280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145338280 is an abundant number, since it is smaller than the sum of its proper divisors (189281720).

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

145338280 is a wasteful number, since it uses less digits than its factorization.

145338280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84553 (or 84549 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 145338280 is about 12055.6327084065. The cubic root of 145338280 is about 525.7670179293.

The spelling of 145338280 in words is "one hundred forty-five million, three hundred thirty-eight thousand, two hundred eighty".