1215952266 has 16 divisors (see below), whose sum is σ = 2432523744. Its totient is φ = 405214224.

The previous prime is 1215952259. The next prime is 1215952267. The reversal of 1215952266 is 6622595121.

It is not an unprimeable number, because it can be changed into a prime (1215952267) 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, 2040 + ... + 49356.

It is an arithmetic number, because the mean of its divisors is an integer number (152032734).

Almost surely, 2^1215952266 is an apocalyptic number.

1215952266 is an abundant number, since it is smaller than the sum of its proper divisors (1216571478).

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

1215952266 is a wasteful number, since it uses less digits than its factorization.

1215952266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51605.

The product of its digits is 64800, while the sum is 39.

The square root of 1215952266 is about 34870.5071084434. The cubic root of 1215952266 is about 1067.3466929152.

The spelling of 1215952266 in words is "one billion, two hundred fifteen million, nine hundred fifty-two thousand, two hundred sixty-six".