402840227 has 8 divisors (see below), whose sum is σ = 411254064. Its totient is φ = 394456608.

The previous prime is 402840203. The next prime is 402840241. The reversal of 402840227 is 722048204.

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 402840227 - 2⁸ = 402839971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402840227.

It is not an unprimeable number, because it can be changed into a prime (402848227) 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, 20453 + ... + 34985.

It is an arithmetic number, because the mean of its divisors is an integer number (51406758).

Almost surely, 2^402840227 is an apocalyptic number.

402840227 is a deficient number, since it is larger than the sum of its proper divisors (8413837).

402840227 is a wasteful number, since it uses less digits than its factorization.

402840227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15109.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 402840227 is about 20070.8800753729. The cubic root of 402840227 is about 738.5461026286.

The spelling of 402840227 in words is "four hundred two million, eight hundred forty thousand, two hundred twenty-seven".