73780434 has 96 divisors (see below), whose sum is σ = 203234304. Its totient is φ = 18817920.

The previous prime is 73780417. The next prime is 73780457. The reversal of 73780434 is 43408737.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50052 + ... + 51504.

It is an arithmetic number, because the mean of its divisors is an integer number (2117024).

Almost surely, 2^73780434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73780434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101617152).

73780434 is an abundant number, since it is smaller than the sum of its proper divisors (129453870).

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

73780434 is a wasteful number, since it uses less digits than its factorization.

73780434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 73780434 is about 8589.5537718790. The cubic root of 73780434 is about 419.4180034201.

The spelling of 73780434 in words is "seventy-three million, seven hundred eighty thousand, four hundred thirty-four".