145304712 has 128 divisors (see below), whose sum is σ = 488505600. Its totient is φ = 39066624.

The previous prime is 145304699. The next prime is 145304713. The reversal of 145304712 is 217403541.

It is a super-2 number, since 2×145304712² = 42226918658805888, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (145304713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22878 + ... + 28530.

It is an arithmetic number, because the mean of its divisors is an integer number (3816450).

Almost surely, 2^145304712 is an apocalyptic number.

145304712 is a gapful number since it is divisible by the number (12) 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 145304712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244252800).

145304712 is an abundant number, since it is smaller than the sum of its proper divisors (343200888).

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

145304712 is a wasteful number, since it uses less digits than its factorization.

145304712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 145304712 is about 12054.2404157209. The cubic root of 145304712 is about 525.7265369534.

The spelling of 145304712 in words is "one hundred forty-five million, three hundred four thousand, seven hundred twelve".