145223430 has 64 divisors (see below), whose sum is σ = 382779648. Its totient is φ = 34968960.

The previous prime is 145223417. The next prime is 145223443. The reversal of 145223430 is 34322541.

It is an interprime number because it is at equal distance from previous prime (145223417) and next prime (145223443).

It is a self number, because there is not a number n which added to its sum of digits gives 145223430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50409 + ... + 53211.

It is an arithmetic number, because the mean of its divisors is an integer number (5980932).

Almost surely, 2^145223430 is an apocalyptic number.

145223430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145223430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191389824).

145223430 is an abundant number, since it is smaller than the sum of its proper divisors (237556218).

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

145223430 is a wasteful number, since it uses less digits than its factorization.

145223430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981.

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

The square root of 145223430 is about 12050.8684334367. The cubic root of 145223430 is about 525.6284899499.

Adding to 145223430 its reverse (34322541), we get a palindrome (179545971).

The spelling of 145223430 in words is "one hundred forty-five million, two hundred twenty-three thousand, four hundred thirty".