428322071 has 8 divisors (see below), whose sum is σ = 442409088. Its totient is φ = 414252000.

The previous prime is 428322067. The next prime is 428322079. The reversal of 428322071 is 170223824.

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

It is a cyclic number.

It is not a de Polignac number, because 428322071 - 2² = 428322067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428322079) 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, 65741 + ... + 71961.

It is an arithmetic number, because the mean of its divisors is an integer number (55301136).

Almost surely, 2^428322071 is an apocalyptic number.

428322071 is a deficient number, since it is larger than the sum of its proper divisors (14087017).

428322071 is a wasteful number, since it uses less digits than its factorization.

428322071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8473.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 428322071 is about 20695.9433464629. The cubic root of 428322071 is about 753.8011885916.

Adding to 428322071 its reverse (170223824), we get a palindrome (598545895).

The spelling of 428322071 in words is "four hundred twenty-eight million, three hundred twenty-two thousand, seventy-one".