8728426431 has 10 divisors (see below), whose sum is σ = 13038760592. Its totient is φ = 5818950900.

The previous prime is 8728426391. The next prime is 8728426439. The reversal of 8728426431 is 1346248278.

It is a happy number.

8728426431 is a `hidden beast` number, since 87 + 284 + 264 + 31 = 666.

It is not a de Polignac number, because 8728426431 - 2⁷ = 8728426303 is a prime.

It is a super-2 number, since 2×8728426431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8728426439) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 53879095 + ... + 53879256.

Almost surely, 2^8728426431 is an apocalyptic number.

8728426431 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8728426431 is a deficient number, since it is larger than the sum of its proper divisors (4310334161).

8728426431 is a wasteful number, since it uses less digits than its factorization.

8728426431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107758363 (or 107758354 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 8728426431 is about 93426.0479256187. The cubic root of 8728426431 is about 2058.9477164866.

The spelling of 8728426431 in words is "eight billion, seven hundred twenty-eight million, four hundred twenty-six thousand, four hundred thirty-one".