28070342 has 4 divisors (see below), whose sum is σ = 42105516. Its totient is φ = 14035170.

The previous prime is 28070323. The next prime is 28070369. The reversal of 28070342 is 24307082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24307082 = 2 ⋅12153541.

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, 7017584 + ... + 7017587.

It is an arithmetic number, because the mean of its divisors is an integer number (10526379).

Almost surely, 2^28070342 is an apocalyptic number.

28070342 is a deficient number, since it is larger than the sum of its proper divisors (14035174).

28070342 is a wasteful number, since it uses less digits than its factorization.

28070342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14035173.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 28070342 is about 5298.1451471246. The cubic root of 28070342 is about 303.9129699510.

The spelling of 28070342 in words is "twenty-eight million, seventy thousand, three hundred forty-two".