1230287940 has 480 divisors, whose sum is σ = 4742115840. Its totient is φ = 260941824.

The previous prime is 1230287923. The next prime is 1230287983. The reversal of 1230287940 is 497820321.

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 = 1230287895 and 1230287904.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 13823416 + ... + 13823504.

It is an arithmetic number, because the mean of its divisors is an integer number (9879408).

Almost surely, 2^1230287940 is an apocalyptic number.

1230287940 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 1230287940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2371057920).

1230287940 is an abundant number, since it is smaller than the sum of its proper divisors (3511827900).

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

1230287940 is a wasteful number, since it uses less digits than its factorization.

1230287940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1230287940 is about 35075.4606527127. The cubic root of 1230287940 is about 1071.5248704302.

The spelling of 1230287940 in words is "one billion, two hundred thirty million, two hundred eighty-seven thousand, nine hundred forty".