1215032630 has 32 divisors (see below), whose sum is σ = 2513968704. Its totient is φ = 414170496.

The previous prime is 1215032629. The next prime is 1215032641. The reversal of 1215032630 is 362305121.

It is a junction number, because it is equal to n+sod(n) for n = 1215032596 and 1215032605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38057 + ... + 62276.

It is an arithmetic number, because the mean of its divisors is an integer number (78561522).

Almost surely, 2^1215032630 is an apocalyptic number.

1215032630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215032630 is an abundant number, since it is smaller than the sum of its proper divisors (1298936074).

1215032630 is a wasteful number, since it uses less digits than its factorization.

1215032630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100520.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1215032630 is about 34857.3181699338. The cubic root of 1215032630 is about 1067.0775436425.

Adding to 1215032630 its reverse (362305121), we get a palindrome (1577337751).

The spelling of 1215032630 in words is "one billion, two hundred fifteen million, thirty-two thousand, six hundred thirty".