72019274 has 4 divisors (see below), whose sum is σ = 108028914. Its totient is φ = 36009636.

The previous prime is 72019271. The next prime is 72019309. The reversal of 72019274 is 47291027.

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., 59367025 + 12652249 = 7705^2 + 3557^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72019274.

It is not an unprimeable number, because it can be changed into a prime (72019271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18004817 + ... + 18004820.

Almost surely, 2^72019274 is an apocalyptic number.

72019274 is a deficient number, since it is larger than the sum of its proper divisors (36009640).

72019274 is a wasteful number, since it uses less digits than its factorization.

72019274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36009639.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 72019274 is about 8486.4170295832. The cubic root of 72019274 is about 416.0538830907.

The spelling of 72019274 in words is "seventy-two million, nineteen thousand, two hundred seventy-four".