73257140 has 24 divisors (see below), whose sum is σ = 167825952. Its totient is φ = 26638880.

The previous prime is 73257137. The next prime is 73257143. The reversal of 73257140 is 4175237.

It is an interprime number because it is at equal distance from previous prime (73257137) and next prime (73257143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73257143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166274 + ... + 166713.

It is an arithmetic number, because the mean of its divisors is an integer number (6992748).

Almost surely, 2^73257140 is an apocalyptic number.

It is an amenable number.

73257140 is an abundant number, since it is smaller than the sum of its proper divisors (94568812).

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

73257140 is a wasteful number, since it uses less digits than its factorization.

73257140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333007 (or 333005 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 73257140 is about 8559.0384974014. The cubic root of 73257140 is about 418.4240638887.

The spelling of 73257140 in words is "seventy-three million, two hundred fifty-seven thousand, one hundred forty".