3978572502 has 16 divisors (see below), whose sum is σ = 7957799280. Its totient is φ = 1326081792.

The previous prime is 3978572471. The next prime is 3978572503. The reversal of 3978572502 is 2052758793.

It is a happy number.

3978572502 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978572503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91774 + ... + 127982.

It is an arithmetic number, because the mean of its divisors is an integer number (497362455).

Almost surely, 2^3978572502 is an apocalyptic number.

3978572502 is an abundant number, since it is smaller than the sum of its proper divisors (3979226778).

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

3978572502 is a wasteful number, since it uses less digits than its factorization.

3978572502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54527.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 3978572502 is about 63075.9264854667. The cubic root of 3978572502 is about 1584.5614727540.

The spelling of 3978572502 in words is "three billion, nine hundred seventy-eight million, five hundred seventy-two thousand, five hundred two".