73747540 has 24 divisors (see below), whose sum is σ = 155387232. Its totient is φ = 29400480.

The previous prime is 73747519. The next prime is 73747573. The reversal of 73747540 is 4574737.

It is a self number, because there is not a number n which added to its sum of digits gives 73747540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 12145.

It is an arithmetic number, because the mean of its divisors is an integer number (6474468).

Almost surely, 2^73747540 is an apocalyptic number.

It is an amenable number.

73747540 is an abundant number, since it is smaller than the sum of its proper divisors (81639692).

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

73747540 is a wasteful number, since it uses less digits than its factorization.

73747540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12327 (or 12325 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 73747540 is about 8587.6387907271. The cubic root of 73747540 is about 419.3556635563.

The spelling of 73747540 in words is "seventy-three million, seven hundred forty-seven thousand, five hundred forty".