15000642 has 24 divisors (see below), whose sum is σ = 32722560. Its totient is φ = 4966200.

The previous prime is 15000631. The next prime is 15000649. The reversal of 15000642 is 24600051.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (15000649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42 + ... + 5477.

It is an arithmetic number, because the mean of its divisors is an integer number (1363440).

Almost surely, 2^15000642 is an apocalyptic number.

15000642 is an abundant number, since it is smaller than the sum of its proper divisors (17721918).

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

15000642 is a wasteful number, since it uses less digits than its factorization.

15000642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678 (or 5675 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 15000642 is about 3873.0662271642. The cubic root of 15000642 is about 246.6247258454.

Adding to 15000642 its reverse (24600051), we get a palindrome (39600693).

The spelling of 15000642 in words is "fifteen million, six hundred forty-two", and thus it is an aban number.