1232861940 has 144 divisors (see below), whose sum is σ = 3897653760. Its totient is φ = 315083520.

The previous prime is 1232861897. The next prime is 1232861953. The reversal of 1232861940 is 491682321.

1232861940 is a `hidden beast` number, since 1 + 2 + 32 + 8 + 619 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1232861895 and 1232861904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 607207 + ... + 609233.

It is an arithmetic number, because the mean of its divisors is an integer number (27067040).

Almost surely, 2^1232861940 is an apocalyptic number.

1232861940 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 1232861940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1948826880).

1232861940 is an abundant number, since it is smaller than the sum of its proper divisors (2664791820).

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

1232861940 is a wasteful number, since it uses less digits than its factorization.

1232861940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1232861940 is about 35112.1338001552. The cubic root of 1232861940 is about 1072.2716288822.

The spelling of 1232861940 in words is "one billion, two hundred thirty-two million, eight hundred sixty-one thousand, nine hundred forty".