145301440 has 56 divisors (see below), whose sum is σ = 353397312. Its totient is φ = 56878080.

The previous prime is 145301437. The next prime is 145301501. The reversal of 145301440 is 44103541.

It is a super-2 number, since 2×145301440² = 42225016932147200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10210 + ... + 19870.

Almost surely, 2^145301440 is an apocalyptic number.

145301440 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 145301440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176698656).

145301440 is an abundant number, since it is smaller than the sum of its proper divisors (208095872).

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

145301440 is an equidigital number, since it uses as much as digits as its factorization.

145301440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725 (or 9715 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 145301440 is about 12054.1046950821. The cubic root of 145301440 is about 525.7225907861.

Adding to 145301440 its reverse (44103541), we get a palindrome (189404981).

The spelling of 145301440 in words is "one hundred forty-five million, three hundred one thousand, four hundred forty".