428026724 has 6 divisors (see below), whose sum is σ = 749046774. Its totient is φ = 214013360.

The previous prime is 428026723. The next prime is 428026727. The reversal of 428026724 is 427620824.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 403206400 + 24820324 = 20080^2 + 4982^2 .

It is not an unprimeable number, because it can be changed into a prime (428026723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53503337 + ... + 53503344.

It is an arithmetic number, because the mean of its divisors is an integer number (124841129).

Almost surely, 2^428026724 is an apocalyptic number.

It is an amenable number.

428026724 is a deficient number, since it is larger than the sum of its proper divisors (321020050).

428026724 is a wasteful number, since it uses less digits than its factorization.

428026724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107006685 (or 107006683 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 428026724 is about 20688.8067321438. The cubic root of 428026724 is about 753.6278890070.

The spelling of 428026724 in words is "four hundred twenty-eight million, twenty-six thousand, seven hundred twenty-four".