428072415 has 8 divisors (see below), whose sum is σ = 684915888. Its totient is φ = 228305280.

The previous prime is 428072387. The next prime is 428072471. The reversal of 428072415 is 514270824.

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

It is not a de Polignac number, because 428072415 - 2¹³ = 428064223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14269066 + ... + 14269095.

It is an arithmetic number, because the mean of its divisors is an integer number (85614486).

Almost surely, 2^428072415 is an apocalyptic number.

428072415 is a deficient number, since it is larger than the sum of its proper divisors (256843473).

428072415 is a wasteful number, since it uses less digits than its factorization.

428072415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28538169.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 428072415 is about 20689.9109471259. The cubic root of 428072415 is about 753.6547041447.

The spelling of 428072415 in words is "four hundred twenty-eight million, seventy-two thousand, four hundred fifteen".