1215264430 has 64 divisors (see below), whose sum is σ = 2329482240. Its totient is φ = 455704704.

The previous prime is 1215264419. The next prime is 1215264433. The reversal of 1215264430 is 344625121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215264433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2221417 + ... + 2221963.

It is an arithmetic number, because the mean of its divisors is an integer number (36398160).

Almost surely, 2^1215264430 is an apocalyptic number.

1215264430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215264430 is a deficient number, since it is larger than the sum of its proper divisors (1114217810).

1215264430 is a wasteful number, since it uses less digits than its factorization.

1215264430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1215264430 is about 34860.6429946437. The cubic root of 1215264430 is about 1067.1453971965.

Adding to 1215264430 its reverse (344625121), we get a palindrome (1559889551).

The spelling of 1215264430 in words is "one billion, two hundred fifteen million, two hundred sixty-four thousand, four hundred thirty".