72434412 has 36 divisors (see below), whose sum is σ = 189882056. Its totient is φ = 24144480.

The previous prime is 72434377. The next prime is 72434471. The reversal of 72434412 is 21443427.

72434412 is a `hidden beast` number, since 7 + 243 + 4 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36289 + ... + 38232.

Almost surely, 2^72434412 is an apocalyptic number.

It is an amenable number.

72434412 is an abundant number, since it is smaller than the sum of its proper divisors (117447644).

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

72434412 is a wasteful number, since it uses less digits than its factorization.

72434412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74540 (or 74526 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 72434412 is about 8510.8408515258. The cubic root of 72434412 is about 416.8517665769.

Adding to 72434412 its reverse (21443427), we get a palindrome (93877839).

The spelling of 72434412 in words is "seventy-two million, four hundred thirty-four thousand, four hundred twelve".