15244400402 has 32 divisors (see below), whose sum is σ = 28530347904. Its totient is φ = 5934931200.

The previous prime is 15244400393. The next prime is 15244400407. The reversal of 15244400402 is 20400444251.

It is not an unprimeable number, because it can be changed into a prime (15244400407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173228 + ... + 245960.

It is an arithmetic number, because the mean of its divisors is an integer number (891573372).

Almost surely, 2^15244400402 is an apocalyptic number.

15244400402 is a deficient number, since it is larger than the sum of its proper divisors (13285947502).

15244400402 is a wasteful number, since it uses less digits than its factorization.

15244400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74114.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 15244400402 its reverse (20400444251), we get a palindrome (35644844653).

The spelling of 15244400402 in words is "fifteen billion, two hundred forty-four million, four hundred thousand, four hundred two".