402260033640 has 512 divisors, whose sum is σ = 1379524608000. Its totient is φ = 93278355456.

The previous prime is 402260033611. The next prime is 402260033671. The reversal of 402260033640 is 46330062204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 402260033598 and 402260033607.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 174212806 + ... + 174215114.

It is an arithmetic number, because the mean of its divisors is an integer number (2694384000).

Almost surely, 2^402260033640 is an apocalyptic number.

402260033640 is a gapful number since it is divisible by the number (40) 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 402260033640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689762304000).

402260033640 is an abundant number, since it is smaller than the sum of its proper divisors (977264574360).

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

402260033640 is a wasteful number, since it uses less digits than its factorization.

402260033640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2485 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 402260033640 its reverse (46330062204), we get a palindrome (448590095844).

The spelling of 402260033640 in words is "four hundred two billion, two hundred sixty million, thirty-three thousand, six hundred forty".