2978725652 has 96 divisors (see below), whose sum is σ = 6453457920. Its totient is φ = 1174118400.

The previous prime is 2978725643. The next prime is 2978725657. The reversal of 2978725652 is 2565278792.

It is a junction number, because it is equal to n+sod(n) for n = 2978725594 and 2978725603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978725657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4248902 + ... + 4249602.

It is an arithmetic number, because the mean of its divisors is an integer number (67223520).

Almost surely, 2^2978725652 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 2978725652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3226728960).

2978725652 is an abundant number, since it is smaller than the sum of its proper divisors (3474732268).

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

2978725652 is a wasteful number, since it uses less digits than its factorization.

2978725652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 53.

The square root of 2978725652 is about 54577.7028831372. The cubic root of 2978725652 is about 1438.8322664019.

The spelling of 2978725652 in words is "two billion, nine hundred seventy-eight million, seven hundred twenty-five thousand, six hundred fifty-two".