1238760540 has 192 divisors, whose sum is σ = 3949854720. Its totient is φ = 326265408.

The previous prime is 1238760463. The next prime is 1238760547. The reversal of 1238760540 is 450678321.

1238760540 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 7 + 605 + 40 = 666.

It is a super-2 number, since 2×1238760540² = 3069055350922183200, which contains 22 as substring.

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 = 1238760495 and 1238760504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238760547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5554869 + ... + 5555091.

It is an arithmetic number, because the mean of its divisors is an integer number (20572160).

Almost surely, 2^1238760540 is an apocalyptic number.

1238760540 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 1238760540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1974927360).

1238760540 is an abundant number, since it is smaller than the sum of its proper divisors (2711094180).

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

1238760540 is a wasteful number, since it uses less digits than its factorization.

1238760540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1238760540 is about 35196.0301738705. The cubic root of 1238760540 is about 1073.9789952510.

It can be divided in two parts, 12387 and 60540, that added together give a palindrome (72927).

The spelling of 1238760540 in words is "one billion, two hundred thirty-eight million, seven hundred sixty thousand, five hundred forty".