428142393326404 has 27 divisors (see below), whose sum is σ = 755204512293567. Its totient is φ = 212382989547624.

The previous prime is 428142393326381. The next prime is 428142393326491. The reversal of 428142393326404 is 404623393241824.

The square root of 428142393326404 is 20691602.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×428142393326404² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5255626177 + ... + 5255707639.

Almost surely, 2^{428142393326404} is an apocalyptic number.

428142393326404 is the 20691602-nd square number.

It is an amenable number.

428142393326404 is a deficient number, since it is larger than the sum of its proper divisors (327062118967163).

428142393326404 is an frugal number, since it uses more digits than its factorization.

428142393326404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163184 (or 81592 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 55.

The spelling of 428142393326404 in words is "four hundred twenty-eight trillion, one hundred forty-two billion, three hundred ninety-three million, three hundred twenty-six thousand, four hundred four".