7720000252 has 12 divisors (see below), whose sum is σ = 13531901040. Its totient is φ = 3853742816.

The previous prime is 7720000213. The next prime is 7720000273. The reversal of 7720000252 is 2520000277.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561552 + ... + 1566487.

It is an arithmetic number, because the mean of its divisors is an integer number (1127658420).

Almost surely, 2^7720000252 is an apocalyptic number.

It is an amenable number.

7720000252 is a deficient number, since it is larger than the sum of its proper divisors (5811900788).

7720000252 is a wasteful number, since it uses less digits than its factorization.

7720000252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128660 (or 3128658 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 7720000252 is about 87863.5319799973. The cubic root of 7720000252 is about 1976.3890459722.

Adding to 7720000252 its sum of digits (25), we get a palindrome (7720000277).

The spelling of 7720000252 in words is "seven billion, seven hundred twenty million, two hundred fifty-two", and thus it is an aban number.