428571465 has 32 divisors (see below), whose sum is σ = 784961280. Its totient is φ = 195596544.

The previous prime is 428571461. The next prime is 428571469. The reversal of 428571465 is 564175824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (428571461) and next prime (428571469).

It is not a de Polignac number, because 428571465 - 2² = 428571461 is a prime.

It is a super-2 number, since 2×428571465² = 367347001224492450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428571461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68071 + ... + 74099.

It is an arithmetic number, because the mean of its divisors is an integer number (24530040).

Almost surely, 2^428571465 is an apocalyptic number.

It is an amenable number.

428571465 is a deficient number, since it is larger than the sum of its proper divisors (356389815).

428571465 is a wasteful number, since it uses less digits than its factorization.

428571465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721.

The product of its digits is 268800, while the sum is 42.

The square root of 428571465 is about 20701.9676601042. The cubic root of 428571465 is about 753.9474624910.

The spelling of 428571465 in words is "four hundred twenty-eight million, five hundred seventy-one thousand, four hundred sixty-five".