72422002 has 4 divisors (see below), whose sum is σ = 108633006. Its totient is φ = 36211000.

The previous prime is 72421991. The next prime is 72422003. The reversal of 72422002 is 20022427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53158681 + 19263321 = 7291^2 + 4389^2 .

It is not an unprimeable number, because it can be changed into a prime (72422003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18105499 + ... + 18105502.

Almost surely, 2^72422002 is an apocalyptic number.

72422002 is a deficient number, since it is larger than the sum of its proper divisors (36211004).

72422002 is a wasteful number, since it uses less digits than its factorization.

72422002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36211003.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 72422002 is about 8510.1117501476. Note that the first 3 decimals coincide. The cubic root of 72422002 is about 416.8279591731.

Adding to 72422002 its reverse (20022427), we get a palindrome (92444429).

The spelling of 72422002 in words is "seventy-two million, four hundred twenty-two thousand, two".