8121600428 has 12 divisors (see below), whose sum is σ = 14237437032. Its totient is φ = 4053761280.

The previous prime is 8121600427. The next prime is 8121600433. The reversal of 8121600428 is 8240061218.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8121600394 and 8121600403.

It is not an unprimeable number, because it can be changed into a prime (8121600427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1757138 + ... + 1761753.

It is an arithmetic number, because the mean of its divisors is an integer number (1186453086).

Almost surely, 2^8121600428 is an apocalyptic number.

It is an amenable number.

8121600428 is a deficient number, since it is larger than the sum of its proper divisors (6115836604).

8121600428 is a wasteful number, since it uses less digits than its factorization.

8121600428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519472 (or 3519470 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 8121600428 is about 90119.9224811029. The cubic root of 8121600428 is about 2010.0824556324.

The spelling of 8121600428 in words is "eight billion, one hundred twenty-one million, six hundred thousand, four hundred twenty-eight".