7730242690 has 16 divisors (see below), whose sum is σ = 14142543480. Its totient is φ = 3041406720.

The previous prime is 7730242643. The next prime is 7730242691. The reversal of 7730242690 is 962420377.

It can be written as a sum of positive squares in 4 ways, for example, as 3928657041 + 3801585649 = 62679^2 + 61657^2 .

It is a super-2 number, since 2×7730242690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7730242691) 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, 6335655 + ... + 6336874.

Almost surely, 2^7730242690 is an apocalyptic number.

7730242690 is a deficient number, since it is larger than the sum of its proper divisors (6412300790).

7730242690 is a wasteful number, since it uses less digits than its factorization.

7730242690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672597.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 7730242690 is about 87921.7987190890. The cubic root of 7730242690 is about 1977.2627115930.

The spelling of 7730242690 in words is "seven billion, seven hundred thirty million, two hundred forty-two thousand, six hundred ninety".