3097740640 has 144 divisors (see below), whose sum is σ = 7722258768. Its totient is φ = 1173408768.

The previous prime is 3097740631. The next prime is 3097740641. The reversal of 3097740640 is 460477903.

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 = 3097740593 and 3097740602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3097740641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10945939 + ... + 10946221.

It is an arithmetic number, because the mean of its divisors is an integer number (53626797).

Almost surely, 2^3097740640 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 3097740640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3861129384).

3097740640 is an abundant number, since it is smaller than the sum of its proper divisors (4624518128).

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

3097740640 is a wasteful number, since it uses less digits than its factorization.

3097740640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 3097740640 is about 55657.3502782876. The cubic root of 3097740640 is about 1457.7454161617.

It can be divided in two parts, 30977 and 40640, that added together give a palindrome (71617).

The spelling of 3097740640 in words is "three billion, ninety-seven million, seven hundred forty thousand, six hundred forty".