1213268080 has 80 divisors (see below), whose sum is σ = 2923884288. Its totient is φ = 467712000.

The previous prime is 1213268057. The next prime is 1213268113. The reversal of 1213268080 is 808623121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696010 + ... + 697750.

Almost surely, 2^1213268080 is an apocalyptic number.

1213268080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213268080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461942144).

1213268080 is an abundant number, since it is smaller than the sum of its proper divisors (1710616208).

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

1213268080 is a wasteful number, since it uses less digits than its factorization.

1213268080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1213268080 is about 34831.9979329352. The cubic root of 1213268080 is about 1066.5607334035.

The spelling of 1213268080 in words is "one billion, two hundred thirteen million, two hundred sixty-eight thousand, eighty".