779728242 has 32 divisors (see below), whose sum is σ = 1603566720. Its totient is φ = 252606080.

The previous prime is 779728241. The next prime is 779728253. The reversal of 779728242 is 242827977.

It is a happy number.

It is a super-2 number, since 2×779728242² = 1215952262744821128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 779728191 and 779728200.

It is not an unprimeable number, because it can be changed into a prime (779728241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60283 + ... + 72065.

It is an arithmetic number, because the mean of its divisors is an integer number (50111460).

Almost surely, 2^779728242 is an apocalyptic number.

779728242 is an abundant number, since it is smaller than the sum of its proper divisors (823838478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

779728242 is a wasteful number, since it uses less digits than its factorization.

779728242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12098.

The product of its digits is 790272, while the sum is 48.

The square root of 779728242 is about 27923.6144150430. The cubic root of 779728242 is about 920.4094908345.

The spelling of 779728242 in words is "seven hundred seventy-nine million, seven hundred twenty-eight thousand, two hundred forty-two".