428615619 has 8 divisors (see below), whose sum is σ = 577146192. Its totient is φ = 282914400.

The previous prime is 428615617. The next prime is 428615639. The reversal of 428615619 is 916516824.

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

It is not a de Polignac number, because 428615619 - 2¹ = 428615617 is a prime.

It is a super-2 number, since 2×428615619² = 367422697701506322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428615617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706984 + ... + 707589.

It is an arithmetic number, because the mean of its divisors is an integer number (72143274).

Almost surely, 2^428615619 is an apocalyptic number.

428615619 is a deficient number, since it is larger than the sum of its proper divisors (148530573).

428615619 is a wasteful number, since it uses less digits than its factorization.

428615619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414677.

The product of its digits is 103680, while the sum is 42.

The square root of 428615619 is about 20703.0340530078. The cubic root of 428615619 is about 753.9733536634.

The spelling of 428615619 in words is "four hundred twenty-eight million, six hundred fifteen thousand, six hundred nineteen".