73620020 has 12 divisors (see below), whose sum is σ = 154602084. Its totient is φ = 29448000.

The previous prime is 73619983. The next prime is 73620037. The reversal of 73620020 is 2002637.

It can be written as a sum of positive squares in 2 ways, for example, as 37283236 + 36336784 = 6106^2 + 6028^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3681001 = 73620020 / (7 + 3 + 6 + 2 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 73619974 and 73620001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1840481 + ... + 1840520.

It is an arithmetic number, because the mean of its divisors is an integer number (12883507).

Almost surely, 2^73620020 is an apocalyptic number.

It is an amenable number.

73620020 is an abundant number, since it is smaller than the sum of its proper divisors (80982064).

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

73620020 is a wasteful number, since it uses less digits than its factorization.

73620020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681010 (or 3681008 counting only the distinct ones).

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

The square root of 73620020 is about 8580.2109531176. The cubic root of 73620020 is about 419.1138155501.

Adding to 73620020 its reverse (2002637), we get a palindrome (75622657).

The spelling of 73620020 in words is "seventy-three million, six hundred twenty thousand, twenty".