145997712 has 60 divisors (see below), whose sum is σ = 466964160. Its totient is φ = 41713344.

The previous prime is 145997699. The next prime is 145997741. The reversal of 145997712 is 217799541.

It is a super-4 number, since 4×145997712⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71412 + ... + 73427.

It is an arithmetic number, because the mean of its divisors is an integer number (7782736).

Almost surely, 2^145997712 is an apocalyptic number.

145997712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145997712 is an abundant number, since it is smaller than the sum of its proper divisors (320966448).

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

145997712 is a wasteful number, since it uses less digits than its factorization.

145997712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144860 (or 144851 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 145997712 is about 12082.9512951100. The cubic root of 145997712 is about 526.5609921684.

The spelling of 145997712 in words is "one hundred forty-five million, nine hundred ninety-seven thousand, seven hundred twelve".