72434224 has 10 divisors (see below), whose sum is σ = 140341340. Its totient is φ = 36217104.

The previous prime is 72434221. The next prime is 72434227. The reversal of 72434224 is 42243427.

It is an interprime number because it is at equal distance from previous prime (72434221) and next prime (72434227).

It is a junction number, because it is equal to n+sod(n) for n = 72434192 and 72434201.

It is not an unprimeable number, because it can be changed into a prime (72434221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2263554 + ... + 2263585.

It is an arithmetic number, because the mean of its divisors is an integer number (14034134).

Almost surely, 2^72434224 is an apocalyptic number.

It is an amenable number.

72434224 is a deficient number, since it is larger than the sum of its proper divisors (67907116).

72434224 is a wasteful number, since it uses less digits than its factorization.

72434224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527147 (or 4527141 counting only the distinct ones).

The product of its digits is 10752, while the sum is 28.

The square root of 72434224 is about 8510.8298067815. The cubic root of 72434224 is about 416.8514059370.

The spelling of 72434224 in words is "seventy-two million, four hundred thirty-four thousand, two hundred twenty-four".