145163280 has 80 divisors (see below), whose sum is σ = 451221120. Its totient is φ = 38605824.

The previous prime is 145163279. The next prime is 145163309. The reversal of 145163280 is 82361541.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 136029 + ... + 137091.

It is an arithmetic number, because the mean of its divisors is an integer number (5640264).

Almost surely, 2^145163280 is an apocalyptic number.

145163280 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 145163280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225610560).

145163280 is an abundant number, since it is smaller than the sum of its proper divisors (306057840).

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

145163280 is a wasteful number, since it uses less digits than its factorization.

145163280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 145163280 is about 12048.3725042016. The cubic root of 145163280 is about 525.5559100185. Note that the first 3 decimals are identical.

The spelling of 145163280 in words is "one hundred forty-five million, one hundred sixty-three thousand, two hundred eighty".