428267537 has 2 divisors, whose sum is σ = 428267538. Its totient is φ = 428267536.

The previous prime is 428267501. The next prime is 428267561. The reversal of 428267537 is 735762824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351600001 + 76667536 = 18751^2 + 8756^2 .

It is a cyclic number.

It is not a de Polignac number, because 428267537 - 2⁶ = 428267473 is a prime.

It is not a weakly prime, because it can be changed into another prime (428267597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214133768 + 214133769.

It is an arithmetic number, because the mean of its divisors is an integer number (214133769).

Almost surely, 2^428267537 is an apocalyptic number.

It is an amenable number.

428267537 is a deficient number, since it is larger than the sum of its proper divisors (1).

428267537 is an equidigital number, since it uses as much as digits as its factorization.

428267537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 44.

The square root of 428267537 is about 20694.6257999511. The cubic root of 428267537 is about 753.7691958915.

The spelling of 428267537 in words is "four hundred twenty-eight million, two hundred sixty-seven thousand, five hundred thirty-seven".