73420128 has 48 divisors (see below), whose sum is σ = 214144560. Its totient is φ = 24473088.

The previous prime is 73420079. The next prime is 73420147. The reversal of 73420128 is 82102437.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41625 + ... + 43352.

It is an arithmetic number, because the mean of its divisors is an integer number (4461345).

Almost surely, 2^73420128 is an apocalyptic number.

It is an amenable number.

73420128 is an abundant number, since it is smaller than the sum of its proper divisors (140724432).

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

73420128 is a wasteful number, since it uses less digits than its factorization.

73420128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84996 (or 84982 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 73420128 is about 8568.5546038991. The cubic root of 73420128 is about 418.7341478220.

The spelling of 73420128 in words is "seventy-three million, four hundred twenty thousand, one hundred twenty-eight".