201229390 has 16 divisors (see below), whose sum is σ = 362471760. Its totient is φ = 80434240.

The previous prime is 201229367. The next prime is 201229429. The reversal of 201229390 is 93922102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9306 + ... + 22114.

It is an arithmetic number, because the mean of its divisors is an integer number (22654485).

Almost surely, 2^201229390 is an apocalyptic number.

201229390 is a deficient number, since it is larger than the sum of its proper divisors (161242370).

201229390 is a wasteful number, since it uses less digits than its factorization.

201229390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14387.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 201229390 is about 14185.5345334605. The cubic root of 201229390 is about 585.9993535153. Note that the first 3 decimals are identical.

The spelling of 201229390 in words is "two hundred one million, two hundred twenty-nine thousand, three hundred ninety".