1215339430 has 16 divisors (see below), whose sum is σ = 2193329664. Its totient is φ = 484864960.

The previous prime is 1215339421. The next prime is 1215339431. The reversal of 1215339430 is 349335121.

It is a super-2 number, since 2×1215339430² = 2954099860225449800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1215339392 and 1215339401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215339431) 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, 154831 + ... + 162490.

It is an arithmetic number, because the mean of its divisors is an integer number (137083104).

Almost surely, 2^1215339430 is an apocalyptic number.

1215339430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215339430 is a deficient number, since it is larger than the sum of its proper divisors (977990234).

1215339430 is a wasteful number, since it uses less digits than its factorization.

1215339430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317711.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1215339430 is about 34861.7186897032. The cubic root of 1215339430 is about 1067.1673496914.

The spelling of 1215339430 in words is "one billion, two hundred fifteen million, three hundred thirty-nine thousand, four hundred thirty".