1213429248 has 140 divisors (see below), whose sum is σ = 3636188028. Its totient is φ = 404352000.

The previous prime is 1213429237. The next prime is 1213429267. The reversal of 1213429248 is 8429243121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 371623 + ... + 374873.

Almost surely, 2^1213429248 is an apocalyptic number.

1213429248 is a gapful number since it is divisible by the number (18) 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 1213429248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818094014).

1213429248 is an abundant number, since it is smaller than the sum of its proper divisors (2422758780).

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

1213429248 is an frugal number, since it uses more digits than its factorization.

1213429248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287 (or 3256 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1213429248 is about 34834.3113610704. The cubic root of 1213429248 is about 1066.6079578799.

The spelling of 1213429248 in words is "one billion, two hundred thirteen million, four hundred twenty-nine thousand, two hundred forty-eight".