145890212 has 24 divisors (see below), whose sum is σ = 275343936. Its totient is φ = 67236768.

The previous prime is 145890211. The next prime is 145890233. The reversal of 145890212 is 212098541.

It is not an unprimeable number, because it can be changed into a prime (145890211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44543 + ... + 47705.

It is an arithmetic number, because the mean of its divisors is an integer number (11472664).

Almost surely, 2^145890212 is an apocalyptic number.

It is an amenable number.

145890212 is a deficient number, since it is larger than the sum of its proper divisors (129453724).

145890212 is a wasteful number, since it uses less digits than its factorization.

145890212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067 (or 4065 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 145890212 is about 12078.5020594443. The cubic root of 145890212 is about 526.4317225503.

The spelling of 145890212 in words is "one hundred forty-five million, eight hundred ninety thousand, two hundred twelve".