145387212 has 12 divisors (see below), whose sum is σ = 339236856. Its totient is φ = 48462400.

The previous prime is 145387157. The next prime is 145387223. The reversal of 145387212 is 212783541.

145387212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×145387212² = 42274882826265888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6057789 + ... + 6057812.

It is an arithmetic number, because the mean of its divisors is an integer number (28269738).

Almost surely, 2^145387212 is an apocalyptic number.

145387212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145387212 is an abundant number, since it is smaller than the sum of its proper divisors (193849644).

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

145387212 is a wasteful number, since it uses less digits than its factorization.

145387212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12115608 (or 12115606 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 145387212 is about 12057.6619624204. The cubic root of 145387212 is about 525.8260157951.

The spelling of 145387212 in words is "one hundred forty-five million, three hundred eighty-seven thousand, two hundred twelve".