73220030 has 32 divisors (see below), whose sum is σ = 144625824. Its totient is φ = 26522496.

The previous prime is 73220029. The next prime is 73220039. The reversal of 73220030 is 3002237.

It is a super-2 number, since 2×73220030² = 10722345586401800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73219990 and 73220008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73220039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1577 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (4519557).

Almost surely, 2^73220030 is an apocalyptic number.

73220030 is a deficient number, since it is larger than the sum of its proper divisors (71405794).

73220030 is a wasteful number, since it uses less digits than its factorization.

73220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700.

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 73220030 is about 8556.8703390901. The cubic root of 73220030 is about 418.3533980136.

Adding to 73220030 its reverse (3002237), we get a palindrome (76222267).

The spelling of 73220030 in words is "seventy-three million, two hundred twenty thousand, thirty".