428164069 has 8 divisors (see below), whose sum is σ = 451634240. Its totient is φ = 404787456.

The previous prime is 428164039. The next prime is 428164073. The reversal of 428164069 is 960461824.

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 428164069 - 2¹⁹ = 427639781 is a prime.

It is a super-2 number, since 2×428164069² = 366648939965273522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428164039) 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, 13884 + ... + 32389.

It is an arithmetic number, because the mean of its divisors is an integer number (56454280).

Almost surely, 2^428164069 is an apocalyptic number.

It is an amenable number.

428164069 is a deficient number, since it is larger than the sum of its proper divisors (23470171).

428164069 is a wasteful number, since it uses less digits than its factorization.

428164069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46779.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 428164069 is about 20692.1257728635. The cubic root of 428164069 is about 753.7084882994.

The spelling of 428164069 in words is "four hundred twenty-eight million, one hundred sixty-four thousand, sixty-nine".