7742936220 has 24 divisors (see below), whose sum is σ = 21680221584. Its totient is φ = 2064782976.

The previous prime is 7742936197. The next prime is 7742936231. The reversal of 7742936220 is 226392477.

It is a super-2 number, since 2×7742936220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64524409 + ... + 64524528.

It is an arithmetic number, because the mean of its divisors is an integer number (903342566).

Almost surely, 2^7742936220 is an apocalyptic number.

It is an amenable number.

7742936220 is an abundant number, since it is smaller than the sum of its proper divisors (13937285364).

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

7742936220 is a wasteful number, since it uses less digits than its factorization.

7742936220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129048949 (or 129048947 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 7742936220 is about 87993.9555878698. The cubic root of 7742936220 is about 1978.3443817443.

The spelling of 7742936220 in words is "seven billion, seven hundred forty-two million, nine hundred thirty-six thousand, two hundred twenty".