428615090 has 16 divisors (see below), whose sum is σ = 787923072. Its totient is φ = 167798064.

The previous prime is 428615087. The next prime is 428615093. The reversal of 428615090 is 90516824.

It is an interprime number because it is at equal distance from previous prime (428615087) and next prime (428615093).

It is a self number, because there is not a number n which added to its sum of digits gives 428615090.

It is not an unprimeable number, because it can be changed into a prime (428615093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455504 + ... + 456443.

It is an arithmetic number, because the mean of its divisors is an integer number (49245192).

Almost surely, 2^428615090 is an apocalyptic number.

428615090 is a deficient number, since it is larger than the sum of its proper divisors (359307982).

428615090 is a wasteful number, since it uses less digits than its factorization.

428615090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912001.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 428615090 is about 20703.0212770987. The cubic root of 428615090 is about 753.9730434771.

The spelling of 428615090 in words is "four hundred twenty-eight million, six hundred fifteen thousand, ninety".