728426430 has 24 divisors (see below), whose sum is σ = 1893908952. Its totient is φ = 194247024.

The previous prime is 728426393. The next prime is 728426453. The reversal of 728426430 is 34624827.

728426430 is a `hidden beast` number, since 7 + 2 + 8 + 4 + 2 + 643 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4046724 + ... + 4046903.

It is an arithmetic number, because the mean of its divisors is an integer number (78912873).

Almost surely, 2^728426430 is an apocalyptic number.

728426430 is an abundant number, since it is smaller than the sum of its proper divisors (1165482522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728426430 is a wasteful number, since it uses less digits than its factorization.

728426430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093640 (or 8093637 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 728426430 is about 26989.3762432554. The cubic root of 728426430 is about 899.7639010320.

The spelling of 728426430 in words is "seven hundred twenty-eight million, four hundred twenty-six thousand, four hundred thirty".