145917912 has 32 divisors (see below), whose sum is σ = 416908800. Its totient is φ = 41690784.

The previous prime is 145917839. The next prime is 145917931. The reversal of 145917912 is 219719541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434112 + ... + 434447.

It is an arithmetic number, because the mean of its divisors is an integer number (13028400).

Almost surely, 2^145917912 is an apocalyptic number.

145917912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145917912 is an abundant number, since it is smaller than the sum of its proper divisors (270990888).

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

145917912 is a wasteful number, since it uses less digits than its factorization.

145917912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868575 (or 868571 counting only the distinct ones).

The product of its digits is 22680, while the sum is 39.

The square root of 145917912 is about 12079.6486703877. The cubic root of 145917912 is about 526.4650380957.

The spelling of 145917912 in words is "one hundred forty-five million, nine hundred seventeen thousand, nine hundred twelve".