145440306 has 48 divisors (see below), whose sum is σ = 355269600. Its totient is φ = 44070840.

The previous prime is 145440301. The next prime is 145440311. The reversal of 145440306 is 603044541.

145440306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145440301) and next prime (145440311).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 145440306.

It is not an unprimeable number, because it can be changed into a prime (145440301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4596 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (7401450).

Almost surely, 2^145440306 is an apocalyptic number.

145440306 is an abundant number, since it is smaller than the sum of its proper divisors (209829294).

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

145440306 is a wasteful number, since it uses less digits than its factorization.

145440306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22292 (or 22275 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 145440306 is about 12059.8634320626. The cubic root of 145440306 is about 525.8900168589.

Adding to 145440306 its reverse (603044541), we get a palindrome (748484847).

The spelling of 145440306 in words is "one hundred forty-five million, four hundred forty thousand, three hundred six".