73103420 has 24 divisors (see below), whose sum is σ = 165326784. Its totient is φ = 26991936.

The previous prime is 73103411. The next prime is 73103489. The reversal of 73103420 is 2430137.

It is a super-2 number, since 2×73103420² = 10688220031392800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 73103392 and 73103401.

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, 140324 + ... + 140843.

It is an arithmetic number, because the mean of its divisors is an integer number (6888616).

Almost surely, 2^73103420 is an apocalyptic number.

It is an amenable number.

73103420 is an abundant number, since it is smaller than the sum of its proper divisors (92223364).

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

73103420 is a wasteful number, since it uses less digits than its factorization.

73103420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281189 (or 281187 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 73103420 is about 8550.0538010003. The cubic root of 73103420 is about 418.1311905542.

Adding to 73103420 its reverse (2430137), we get a palindrome (75533557).

The spelling of 73103420 in words is "seventy-three million, one hundred three thousand, four hundred twenty".