145719306 has 48 divisors (see below), whose sum is σ = 330572736. Its totient is φ = 46303488.

The previous prime is 145719271. The next prime is 145719307. The reversal of 145719306 is 603917541.

It is a super-2 number, since 2×145719306² = 42468232282243272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (145719307) 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, 216186 + ... + 216858.

It is an arithmetic number, because the mean of its divisors is an integer number (6886932).

Almost surely, 2^145719306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145719306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165286368).

145719306 is an abundant number, since it is smaller than the sum of its proper divisors (184853430).

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

145719306 is a wasteful number, since it uses less digits than its factorization.

145719306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 145719306 is about 12071.4251851221. The cubic root of 145719306 is about 526.2260759111.

The spelling of 145719306 in words is "one hundred forty-five million, seven hundred nineteen thousand, three hundred six".