1321976700 has 360 divisors, whose sum is σ = 4813223184. Its totient is φ = 311040000.

The previous prime is 1321976659. The next prime is 1321976707. The reversal of 1321976700 is 76791231.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321976707) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3296500 + ... + 3296900.

Almost surely, 2^1321976700 is an apocalyptic number.

1321976700 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 1321976700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2406611592).

1321976700 is an abundant number, since it is smaller than the sum of its proper divisors (3491246484).

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

1321976700 is a wasteful number, since it uses less digits than its factorization.

1321976700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 1321976700 is about 36358.9975109326. The cubic root of 1321976700 is about 1097.5086039076.

The spelling of 1321976700 in words is "one billion, three hundred twenty-one million, nine hundred seventy-six thousand, seven hundred".