123628571 has 8 divisors (see below), whose sum is σ = 138157488. Its totient is φ = 109648000.

The previous prime is 123628567. The next prime is 123628577. The reversal of 123628571 is 175826321.

It is a happy number.

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

It is not a de Polignac number, because 123628571 - 2² = 123628567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123628577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136610 + ... + 137511.

It is an arithmetic number, because the mean of its divisors is an integer number (17269686).

Almost surely, 2^123628571 is an apocalyptic number.

123628571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123628571 is a deficient number, since it is larger than the sum of its proper divisors (14528917).

123628571 is a wasteful number, since it uses less digits than its factorization.

123628571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274173.

The product of its digits is 20160, while the sum is 35.

The square root of 123628571 is about 11118.8385634472. The cubic root of 123628571 is about 498.1646995873.

The spelling of 123628571 in words is "one hundred twenty-three million, six hundred twenty-eight thousand, five hundred seventy-one".