73704420 has 144 divisors (see below), whose sum is σ = 245831040. Its totient is φ = 17791488.

The previous prime is 73704419. The next prime is 73704479. The reversal of 73704420 is 2440737.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78192 + ... + 79128.

It is an arithmetic number, because the mean of its divisors is an integer number (1707160).

Almost surely, 2^73704420 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 73704420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122915520).

73704420 is an abundant number, since it is smaller than the sum of its proper divisors (172126620).

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

73704420 is a wasteful number, since it uses less digits than its factorization.

73704420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 73704420 is about 8585.1278383027. The cubic root of 73704420 is about 419.2739155566.

The spelling of 73704420 in words is "seventy-three million, seven hundred four thousand, four hundred twenty".