139028626 has 8 divisors (see below), whose sum is σ = 227501424. Its totient is φ = 63194820.

The previous prime is 139028611. The next prime is 139028627. The reversal of 139028626 is 626820931.

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

It is not an unprimeable number, because it can be changed into a prime (139028627) 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, 3159720 + ... + 3159763.

It is an arithmetic number, because the mean of its divisors is an integer number (28437678).

Almost surely, 2^139028626 is an apocalyptic number.

139028626 is a deficient number, since it is larger than the sum of its proper divisors (88472798).

139028626 is a wasteful number, since it uses less digits than its factorization.

139028626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319496.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 139028626 is about 11791.0400728689. The cubic root of 139028626 is about 518.0457043894.

The spelling of 139028626 in words is "one hundred thirty-nine million, twenty-eight thousand, six hundred twenty-six".