428449190 has 32 divisors (see below), whose sum is σ = 859178880. Its totient is φ = 152740224.

The previous prime is 428449187. The next prime is 428449213. The reversal of 428449190 is 91944824.

It is a super-2 number, since 2×428449190² = 367137416823312200, 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 15 ways as a sum of consecutive naturals, for example, 53054 + ... + 60593.

It is an arithmetic number, because the mean of its divisors is an integer number (26849340).

Almost surely, 2^428449190 is an apocalyptic number.

428449190 is an abundant number, since it is smaller than the sum of its proper divisors (430729690).

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

428449190 is a wasteful number, since it uses less digits than its factorization.

428449190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113696.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 428449190 is about 20699.0142277356. The cubic root of 428449190 is about 753.8757531789.

The spelling of 428449190 in words is "four hundred twenty-eight million, four hundred forty-nine thousand, one hundred ninety".