7728690940 has 12 divisors (see below), whose sum is σ = 16230251016. Its totient is φ = 3091476368.

The previous prime is 7728690929. The next prime is 7728690953. The reversal of 7728690940 is 490968277.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193217254 + ... + 193217293.

It is an arithmetic number, because the mean of its divisors is an integer number (1352520918).

Almost surely, 2^7728690940 is an apocalyptic number.

It is an amenable number.

7728690940 is an abundant number, since it is smaller than the sum of its proper divisors (8501560076).

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

7728690940 is a wasteful number, since it uses less digits than its factorization.

7728690940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386434556 (or 386434554 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 7728690940 is about 87912.9736728317. The cubic root of 7728690940 is about 1977.1303991133.

The spelling of 7728690940 in words is "seven billion, seven hundred twenty-eight million, six hundred ninety thousand, nine hundred forty".