402728541 has 8 divisors (see below), whose sum is σ = 565233120. Its totient is φ = 254354832.

The previous prime is 402728531. The next prime is 402728561. The reversal of 402728541 is 145827204.

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

It is not a de Polignac number, because 402728541 - 2¹⁵ = 402695773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402728531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3532650 + ... + 3532763.

It is an arithmetic number, because the mean of its divisors is an integer number (70654140).

Almost surely, 2^402728541 is an apocalyptic number.

It is an amenable number.

402728541 is a deficient number, since it is larger than the sum of its proper divisors (162504579).

402728541 is a wasteful number, since it uses less digits than its factorization.

402728541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065435.

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

The square root of 402728541 is about 20068.0975929459. The cubic root of 402728541 is about 738.4778432389.

The spelling of 402728541 in words is "four hundred two million, seven hundred twenty-eight thousand, five hundred forty-one".