145405230 has 32 divisors (see below), whose sum is σ = 351074304. Its totient is φ = 38541216.

The previous prime is 145405223. The next prime is 145405243. The reversal of 145405230 is 32504541.

145405230 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 2×145405230² = 42285361822705800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145405230.

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, 9502 + ... + 19521.

It is an arithmetic number, because the mean of its divisors is an integer number (10971072).

Almost surely, 2^145405230 is an apocalyptic number.

145405230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145405230 is an abundant number, since it is smaller than the sum of its proper divisors (205669074).

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

145405230 is a wasteful number, since it uses less digits than its factorization.

145405230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29200.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 145405230 is about 12058.4090990479. The cubic root of 145405230 is about 525.8477369669.

Adding to 145405230 its reverse (32504541), we get a palindrome (177909771).

The spelling of 145405230 in words is "one hundred forty-five million, four hundred five thousand, two hundred thirty".