72044354 has 4 divisors (see below), whose sum is σ = 108066534. Its totient is φ = 36022176.

The previous prime is 72044353. The next prime is 72044359. The reversal of 72044354 is 45344027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45344027 = 1129 ⋅40163.

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 388129 = 8465^2 + 623^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72044353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18011087 + ... + 18011090.

Almost surely, 2^72044354 is an apocalyptic number.

72044354 is a deficient number, since it is larger than the sum of its proper divisors (36022180).

72044354 is a wasteful number, since it uses less digits than its factorization.

72044354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36022179.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 72044354 is about 8487.8945563667. The cubic root of 72044354 is about 416.1021730358.

The spelling of 72044354 in words is "seventy-two million, forty-four thousand, three hundred fifty-four".