428887430 has 16 divisors (see below), whose sum is σ = 773209584. Its totient is φ = 171285600.

The previous prime is 428887397. The next prime is 428887447. The reversal of 428887430 is 34788824.

It is a super-2 number, since 2×428887430² = 367888855224009800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 26921 + ... + 39780.

It is an arithmetic number, because the mean of its divisors is an integer number (48325599).

Almost surely, 2^428887430 is an apocalyptic number.

428887430 is a deficient number, since it is larger than the sum of its proper divisors (344322154).

428887430 is a wasteful number, since it uses less digits than its factorization.

428887430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67351.

The product of its (nonzero) digits is 344064, while the sum is 44.

The square root of 428887430 is about 20709.5975335109. The cubic root of 428887430 is about 754.1326999683.

The spelling of 428887430 in words is "four hundred twenty-eight million, eight hundred eighty-seven thousand, four hundred thirty".