72381202 has 4 divisors (see below), whose sum is σ = 108571806. Its totient is φ = 36190600.

The previous prime is 72381191. The next prime is 72381227. The reversal of 72381202 is 20218327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20218327 = 2207 ⋅9161.

It can be written as a sum of positive squares in only one way, i.e., 50112241 + 22268961 = 7079^2 + 4719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18095299 + ... + 18095302.

Almost surely, 2^72381202 is an apocalyptic number.

72381202 is a deficient number, since it is larger than the sum of its proper divisors (36190604).

72381202 is a wasteful number, since it uses less digits than its factorization.

72381202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36190603.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 72381202 is about 8507.7142641252. The cubic root of 72381202 is about 416.7496690821.

Adding to 72381202 its reverse (20218327), we get a palindrome (92599529).

The spelling of 72381202 in words is "seventy-two million, three hundred eighty-one thousand, two hundred two".