1213234880 has 112 divisors (see below), whose sum is σ = 3394216224. Its totient is φ = 407224320.

The previous prime is 1213234849. The next prime is 1213234907. The reversal of 1213234880 is 884323121.

It is a super-2 number, since 2×1213234880² = 2943877748097228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 32504 + ... + 59016.

It is an arithmetic number, because the mean of its divisors is an integer number (30305502).

Almost surely, 2^1213234880 is an apocalyptic number.

1213234880 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 1213234880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697108112).

1213234880 is an abundant number, since it is smaller than the sum of its proper divisors (2180981344).

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

1213234880 is a wasteful number, since it uses less digits than its factorization.

1213234880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26554 (or 26544 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1213234880 is about 34831.5213563806. The cubic root of 1213234880 is about 1066.5510048200.

The spelling of 1213234880 in words is "one billion, two hundred thirteen million, two hundred thirty-four thousand, eight hundred eighty".