52678642 has 8 divisors (see below), whose sum is σ = 79072236. Its totient is φ = 26321232.

The previous prime is 52678607. The next prime is 52678643. The reversal of 52678642 is 24687625.

It can be written as a sum of positive squares in 2 ways, for example, as 41847961 + 10830681 = 6469^2 + 3291^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 52678595 and 52678604.

It is not an unprimeable number, because it can be changed into a prime (52678643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5053 + ... + 11440.

Almost surely, 2^52678642 is an apocalyptic number.

52678642 is a deficient number, since it is larger than the sum of its proper divisors (26393594).

52678642 is a wasteful number, since it uses less digits than its factorization.

52678642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18092.

The product of its digits is 161280, while the sum is 40.

The square root of 52678642 is about 7258.0053733791. The cubic root of 52678642 is about 374.8678455808.

The spelling of 52678642 in words is "fifty-two million, six hundred seventy-eight thousand, six hundred forty-two".