28626142 has 4 divisors (see below), whose sum is σ = 42939216. Its totient is φ = 14313070.

The previous prime is 28626139. The next prime is 28626163. The reversal of 28626142 is 24162682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7156534 + ... + 7156537.

It is an arithmetic number, because the mean of its divisors is an integer number (10734804).

Almost surely, 2^28626142 is an apocalyptic number.

28626142 is a deficient number, since it is larger than the sum of its proper divisors (14313074).

28626142 is a wasteful number, since it uses less digits than its factorization.

28626142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14313073.

The product of its digits is 9216, while the sum is 31.

The square root of 28626142 is about 5350.3403630050. The cubic root of 28626142 is about 305.9057265800.

The spelling of 28626142 in words is "twenty-eight million, six hundred twenty-six thousand, one hundred forty-two".