3268074640 has 80 divisors (see below), whose sum is σ = 7696435968. Its totient is φ = 1290428928.

The previous prime is 3268074637. The next prime is 3268074671. The reversal of 3268074640 is 464708623.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3268074640² = 21360623705222259200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3268074593 and 3268074602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5050797 + ... + 5051443.

Almost surely, 2^3268074640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3268074640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3848217984).

3268074640 is an abundant number, since it is smaller than the sum of its proper divisors (4428361328).

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

3268074640 is a wasteful number, since it uses less digits than its factorization.

3268074640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 3268074640 is about 57167.0765388611. The cubic root of 3268074640 is about 1483.9889106826.

The spelling of 3268074640 in words is "three billion, two hundred sixty-eight million, seventy-four thousand, six hundred forty".