73687420 has 12 divisors (see below), whose sum is σ = 154743624. Its totient is φ = 29474960.

The previous prime is 73687417. The next prime is 73687429. The reversal of 73687420 is 2478637.

It is a self number, because there is not a number n which added to its sum of digits gives 73687420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73687429) 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, 1842166 + ... + 1842205.

It is an arithmetic number, because the mean of its divisors is an integer number (12895302).

Almost surely, 2^73687420 is an apocalyptic number.

It is an amenable number.

73687420 is an abundant number, since it is smaller than the sum of its proper divisors (81056204).

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

73687420 is a wasteful number, since it uses less digits than its factorization.

73687420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684380 (or 3684378 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 73687420 is about 8584.1376969385. The cubic root of 73687420 is about 419.2416777584.

The spelling of 73687420 in words is "seventy-three million, six hundred eighty-seven thousand, four hundred twenty".