72204412 has 12 divisors (see below), whose sum is σ = 144408880. Its totient is φ = 30944736.

The previous prime is 72204409. The next prime is 72204437. The reversal of 72204412 is 21440227.

It is a happy number.

72204412 is an admirable number.

It is a super-2 number, since 2×72204412² = 10426954224531488, which contains 22 as substring.

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, 1289337 + ... + 1289392.

Almost surely, 2^72204412 is an apocalyptic number.

It is an amenable number.

72204412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72204412 is a wasteful number, since it uses less digits than its factorization.

72204412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578740 (or 2578738 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 72204412 is about 8497.3179297941. The cubic root of 72204412 is about 416.4100908555.

Adding to 72204412 its reverse (21440227), we get a palindrome (93644639).

The spelling of 72204412 in words is "seventy-two million, two hundred four thousand, four hundred twelve".