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402800801 = 13239129643
BaseRepresentation
bin11000000000100…
…100000010100001
31001001221101211012
4120000210002201
51311104111201
6103545230305
712660515234
oct3000440241
91031841735
10402800801
11197409227
12b2a92395
13655b2390
143b6d341b
15255685bb
hex180240a1

402800801 has 8 divisors (see below), whose sum is σ = 435603840. Its totient is φ = 370257552.

The previous prime is 402800791. The next prime is 402800803. The reversal of 402800801 is 108008204.

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 402800801 - 210 = 402799777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402800803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61715 + ... + 67928.

It is an arithmetic number, because the mean of its divisors is an integer number (54450480).

Almost surely, 2402800801 is an apocalyptic number.

It is an amenable number.

402800801 is a deficient number, since it is larger than the sum of its proper divisors (32803039).

402800801 is a wasteful number, since it uses less digits than its factorization.

402800801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129895.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 402800801 is about 20069.8978821518. The cubic root of 402800801 is about 738.5220079904.

The spelling of 402800801 in words is "four hundred two million, eight hundred thousand, eight hundred one".

Divisors: 1 13 239 3107 129643 1685359 30984677 402800801