428618590 has 8 divisors (see below), whose sum is σ = 771513480. Its totient is φ = 171447432.

The previous prime is 428618563. The next prime is 428618599. The reversal of 428618590 is 95816824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428618599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21430920 + ... + 21430939.

It is an arithmetic number, because the mean of its divisors is an integer number (96439185).

Almost surely, 2^428618590 is an apocalyptic number.

428618590 is a deficient number, since it is larger than the sum of its proper divisors (342894890).

428618590 is a wasteful number, since it uses less digits than its factorization.

428618590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42861866.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 428618590 is about 20703.1058056515. The cubic root of 428618590 is about 753.9750957446.

The spelling of 428618590 in words is "four hundred twenty-eight million, six hundred eighteen thousand, five hundred ninety".