73612540 has 12 divisors (see below), whose sum is σ = 154586376. Its totient is φ = 29445008.

The previous prime is 73612501. The next prime is 73612549. The reversal of 73612540 is 4521637.

It is a junction number, because it is equal to n+sod(n) for n = 73612499 and 73612508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73612549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1840294 + ... + 1840333.

It is an arithmetic number, because the mean of its divisors is an integer number (12882198).

Almost surely, 2^73612540 is an apocalyptic number.

It is an amenable number.

73612540 is an abundant number, since it is smaller than the sum of its proper divisors (80973836).

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

73612540 is a wasteful number, since it uses less digits than its factorization.

73612540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680636 (or 3680634 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 73612540 is about 8579.7750553263. The cubic root of 73612540 is about 419.0996206906.

The spelling of 73612540 in words is "seventy-three million, six hundred twelve thousand, five hundred forty".