1323778470 has 64 divisors (see below), whose sum is σ = 3654153216. Its totient is φ = 300643200.

The previous prime is 1323778451. The next prime is 1323778481. The reversal of 1323778470 is 748773231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12895 + ... + 53045.

It is an arithmetic number, because the mean of its divisors is an integer number (57096144).

Almost surely, 2^1323778470 is an apocalyptic number.

1323778470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323778470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1827076608).

1323778470 is an abundant number, since it is smaller than the sum of its proper divisors (2330374746).

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

1323778470 is a wasteful number, since it uses less digits than its factorization.

1323778470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40325.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 1323778470 is about 36383.7665724702. The cubic root of 1323778470 is about 1098.0069889834.

The spelling of 1323778470 in words is "one billion, three hundred twenty-three million, seven hundred seventy-eight thousand, four hundred seventy".