428010720261 has 8 divisors (see below), whose sum is σ = 570693383040. Its totient is φ = 285334268832.

The previous prime is 428010720259. The next prime is 428010720367. The reversal of 428010720261 is 162027010824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428010720261 - 2¹ = 428010720259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428010720061) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1389600 + ... + 1669433.

It is an arithmetic number, because the mean of its divisors is an integer number (71336672880).

Almost surely, 2^428010720261 is an apocalyptic number.

It is an amenable number.

428010720261 is a deficient number, since it is larger than the sum of its proper divisors (142682662779).

428010720261 is a wasteful number, since it uses less digits than its factorization.

428010720261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105675.

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 428010720261 in words is "four hundred twenty-eight billion, ten million, seven hundred twenty thousand, two hundred sixty-one".