428120928603 has 16 divisors (see below), whose sum is σ = 642083517600. Its totient is φ = 285413950944.

The previous prime is 428120928601. The next prime is 428120928611. The reversal of 428120928603 is 306829021824.

428120928603 is a `hidden beast` number, since 4 + 2 + 8 + 12 + 0 + 9 + 28 + 603 = 666.

It is not a de Polignac number, because 428120928603 - 2¹ = 428120928601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428120928601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97876398 + ... + 97880771.

It is an arithmetic number, because the mean of its divisors is an integer number (40130219850).

Almost surely, 2^428120928603 is an apocalyptic number.

428120928603 is a deficient number, since it is larger than the sum of its proper divisors (213962588997).

428120928603 is an frugal number, since it uses more digits than its factorization.

428120928603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195757190 (or 195757172 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 428120928603 in words is "four hundred twenty-eight billion, one hundred twenty million, nine hundred twenty-eight thousand, six hundred three".