73671620 has 48 divisors (see below), whose sum is σ = 169561728. Its totient is φ = 26664960.

The previous prime is 73671617. The next prime is 73671667. The reversal of 73671620 is 2617637.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55889 + ... + 57191.

It is an arithmetic number, because the mean of its divisors is an integer number (3532536).

Almost surely, 2^73671620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73671620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84780864).

73671620 is an abundant number, since it is smaller than the sum of its proper divisors (95890108).

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

73671620 is a wasteful number, since it uses less digits than its factorization.

73671620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 73671620 is about 8583.2173454946. The cubic root of 73671620 is about 419.2117111237.

The spelling of 73671620 in words is "seventy-three million, six hundred seventy-one thousand, six hundred twenty".