1233456380 has 24 divisors (see below), whose sum is σ = 2789509632. Its totient is φ = 455429952.

The previous prime is 1233456379. The next prime is 1233456401. The reversal of 1233456380 is 836543321.

It is a self number, because there is not a number n which added to its sum of digits gives 1233456380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2371772 + ... + 2372291.

It is an arithmetic number, because the mean of its divisors is an integer number (116229568).

Almost surely, 2^1233456380 is an apocalyptic number.

1233456380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233456380 is an abundant number, since it is smaller than the sum of its proper divisors (1556053252).

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

1233456380 is a wasteful number, since it uses less digits than its factorization.

1233456380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4744085 (or 4744083 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1233456380 is about 35120.5976600627. The cubic root of 1233456380 is about 1072.4439376407.

The spelling of 1233456380 in words is "one billion, two hundred thirty-three million, four hundred fifty-six thousand, three hundred eighty".