2005402254 has 16 divisors (see below), whose sum is σ = 4011396048. Its totient is φ = 668368832.

The previous prime is 2005402249. The next prime is 2005402261. The reversal of 2005402254 is 4522045002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28114 + ... + 69290.

It is an arithmetic number, because the mean of its divisors is an integer number (250712253).

Almost surely, 2^2005402254 is an apocalyptic number.

2005402254 is an abundant number, since it is smaller than the sum of its proper divisors (2005993794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2005402254 is a wasteful number, since it uses less digits than its factorization.

2005402254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49299.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 2005402254 is about 44781.7178544995. The cubic root of 2005402254 is about 1261.0544322919.

Adding to 2005402254 its reverse (4522045002), we get a palindrome (6527447256).

The spelling of 2005402254 in words is "two billion, five million, four hundred two thousand, two hundred fifty-four".