428097538 has 16 divisors (see below), whose sum is σ = 723121920. Its totient is φ = 188312400.

The previous prime is 428097529. The next prime is 428097539. The reversal of 428097538 is 835790824.

It is a super-2 number, since 2×428097538² = 366535004083322888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428097539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313173 + ... + 314536.

It is an arithmetic number, because the mean of its divisors is an integer number (45195120).

Almost surely, 2^428097538 is an apocalyptic number.

428097538 is a deficient number, since it is larger than the sum of its proper divisors (295024382).

428097538 is a wasteful number, since it uses less digits than its factorization.

428097538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627753.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 428097538 is about 20690.5180698793. The cubic root of 428097538 is about 753.6694475200.

The spelling of 428097538 in words is "four hundred twenty-eight million, ninety-seven thousand, five hundred thirty-eight".