15400002 has 8 divisors (see below), whose sum is σ = 30800016. Its totient is φ = 5133332.

The previous prime is 15399997. The next prime is 15400031. The reversal of 15400002 is 20000451.

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

15400002 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 1283328 + ... + 1283339.

It is an arithmetic number, because the mean of its divisors is an integer number (3850002).

Almost surely, 2^15400002 is an apocalyptic number.

15400002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15400002 is a wasteful number, since it uses less digits than its factorization.

15400002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566672.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 15400002 is about 3924.2836288933. The cubic root of 15400002 is about 248.7942042432.

Adding to 15400002 its reverse (20000451), we get a palindrome (35400453).

The spelling of 15400002 in words is "fifteen million, four hundred thousand, two".