72222074 has 16 divisors (see below), whose sum is σ = 111234816. Its totient is φ = 35148000.

The previous prime is 72222071. The next prime is 72222079. The reversal of 72222074 is 47022227.

It is a happy number.

It is a super-4 number, since 4×72222074⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72222071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49049 + ... + 50499.

It is an arithmetic number, because the mean of its divisors is an integer number (6952176).

Almost surely, 2^72222074 is an apocalyptic number.

72222074 is a deficient number, since it is larger than the sum of its proper divisors (39012742).

72222074 is a wasteful number, since it uses less digits than its factorization.

72222074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 72222074 is about 8498.3571353527. The cubic root of 72222074 is about 416.4440409296. Note that the first 3 decimals are identical.

The spelling of 72222074 in words is "seventy-two million, two hundred twenty-two thousand, seventy-four".