428164541 has 4 divisors (see below), whose sum is σ = 489330912. Its totient is φ = 366998172.

The previous prime is 428164537. The next prime is 428164549. The reversal of 428164541 is 145461824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428164541 - 2² = 428164537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428164549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30583175 + ... + 30583188.

It is an arithmetic number, because the mean of its divisors is an integer number (122332728).

Almost surely, 2^428164541 is an apocalyptic number.

It is an amenable number.

428164541 is a deficient number, since it is larger than the sum of its proper divisors (61166371).

428164541 is an equidigital number, since it uses as much as digits as its factorization.

428164541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61166370.

The product of its digits is 30720, while the sum is 35.

The square root of 428164541 is about 20692.1371781650. The cubic root of 428164541 is about 753.7087652573.

The spelling of 428164541 in words is "four hundred twenty-eight million, one hundred sixty-four thousand, five hundred forty-one".