73857820 has 24 divisors (see below), whose sum is σ = 156555504. Its totient is φ = 29266176.

The previous prime is 73857787. The next prime is 73857827. The reversal of 73857820 is 2875837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73857827) 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, 15117 + ... + 19396.

It is an arithmetic number, because the mean of its divisors is an integer number (6523146).

Almost surely, 2^73857820 is an apocalyptic number.

It is an amenable number.

73857820 is an abundant number, since it is smaller than the sum of its proper divisors (82697684).

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

73857820 is a wasteful number, since it uses less digits than its factorization.

73857820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34629 (or 34627 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 73857820 is about 8594.0572490530. The cubic root of 73857820 is about 419.5645903435.

The spelling of 73857820 in words is "seventy-three million, eight hundred fifty-seven thousand, eight hundred twenty".