72354020 has 12 divisors (see below), whose sum is σ = 151943484. Its totient is φ = 28941600.

The previous prime is 72354017. The next prime is 72354097. The reversal of 72354020 is 2045327.

It can be written as a sum of positive squares in 2 ways, for example, as 18800896 + 53553124 = 4336^2 + 7318^2 .

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, 1808831 + ... + 1808870.

It is an arithmetic number, because the mean of its divisors is an integer number (12661957).

Almost surely, 2^72354020 is an apocalyptic number.

It is an amenable number.

72354020 is an abundant number, since it is smaller than the sum of its proper divisors (79589464).

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

72354020 is a wasteful number, since it uses less digits than its factorization.

72354020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617710 (or 3617708 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 72354020 is about 8506.1166227604. The cubic root of 72354020 is about 416.6974938970.

Adding to 72354020 its reverse (2045327), we get a palindrome (74399347).

The spelling of 72354020 in words is "seventy-two million, three hundred fifty-four thousand, twenty".