1215054372 has 36 divisors (see below), whose sum is σ = 3298006320. Its totient is φ = 347158224.

The previous prime is 1215054367. The next prime is 1215054391. The reversal of 1215054372 is 2734505121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1032622 + ... + 1033797.

Almost surely, 2^1215054372 is an apocalyptic number.

1215054372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1215054372 is an abundant number, since it is smaller than the sum of its proper divisors (2082951948).

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

1215054372 is a wasteful number, since it uses less digits than its factorization.

1215054372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066440 (or 2066431 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1215054372 is about 34857.6300399210. The cubic root of 1215054372 is about 1067.0839084267.

Adding to 1215054372 its reverse (2734505121), we get a palindrome (3949559493).

The spelling of 1215054372 in words is "one billion, two hundred fifteen million, fifty-four thousand, three hundred seventy-two".