428009190 has 32 divisors (see below), whose sum is σ = 1173968640. Its totient is φ = 97830624.

The previous prime is 428009167. The next prime is 428009201. The reversal of 428009190 is 91900824.

It is a super-2 number, since 2×428009190² = 366383733448912200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018860 + ... + 1019279.

It is an arithmetic number, because the mean of its divisors is an integer number (36686520).

Almost surely, 2^428009190 is an apocalyptic number.

428009190 is an abundant number, since it is smaller than the sum of its proper divisors (745959450).

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

428009190 is a wasteful number, since it uses less digits than its factorization.

428009190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038156.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 428009190 is about 20688.3829720933. The cubic root of 428009190 is about 753.6175981450.

The spelling of 428009190 in words is "four hundred twenty-eight million, nine thousand, one hundred ninety".