4273665720 has 32 divisors (see below), whose sum is σ = 12820997520. Its totient is φ = 1139644160.

The previous prime is 4273665659. The next prime is 4273665731. The reversal of 4273665720 is 275663724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17806821 + ... + 17807060.

Almost surely, 2^4273665720 is an apocalyptic number.

4273665720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4273665720 is an abundant number, since it is smaller than the sum of its proper divisors (8547331800).

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

4273665720 is a wasteful number, since it uses less digits than its factorization.

4273665720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35613895 (or 35613891 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 4273665720 is about 65373.2798626472. The cubic root of 4273665720 is about 1622.8069154906.

The spelling of 4273665720 in words is "four billion, two hundred seventy-three million, six hundred sixty-five thousand, seven hundred twenty".