73781652 has 72 divisors (see below), whose sum is σ = 201670560. Its totient is φ = 20932800.

The previous prime is 73781651. The next prime is 73781699. The reversal of 73781652 is 25618737.

It is a self number, because there is not a number n which added to its sum of digits gives 73781652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73781651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104902 + ... + 105602.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^73781652 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 73781652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100835280).

73781652 is an abundant number, since it is smaller than the sum of its proper divisors (127888908).

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

73781652 is a wasteful number, since it uses less digits than its factorization.

73781652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 892 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 73781652 is about 8589.6246716606. The cubic root of 73781652 is about 419.4203113866.

The spelling of 73781652 in words is "seventy-three million, seven hundred eighty-one thousand, six hundred fifty-two".