79428658 has 8 divisors (see below), whose sum is σ = 126151452. Its totient is φ = 37378176.

The previous prime is 79428619. The next prime is 79428659. The reversal of 79428658 is 85682497.

It can be written as a sum of positive squares in 2 ways, for example, as 76090729 + 3337929 = 8723^2 + 1827^2 .

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 (79428659) 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, 1168035 + ... + 1168102.

Almost surely, 2^79428658 is an apocalyptic number.

79428658 is a deficient number, since it is larger than the sum of its proper divisors (46722794).

79428658 is a wasteful number, since it uses less digits than its factorization.

79428658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336156.

The product of its digits is 967680, while the sum is 49.

The square root of 79428658 is about 8912.2756914270. The cubic root of 79428658 is about 429.8587204877.

The spelling of 79428658 in words is "seventy-nine million, four hundred twenty-eight thousand, six hundred fifty-eight".