72349078 has 4 divisors (see below), whose sum is σ = 108523620. Its totient is φ = 36174538.

The previous prime is 72349061. The next prime is 72349103. The reversal of 72349078 is 87094327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87094327 = 733 ⋅118819.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72349078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18087268 + ... + 18087271.

It is an arithmetic number, because the mean of its divisors is an integer number (27130905).

Almost surely, 2^72349078 is an apocalyptic number.

72349078 is a deficient number, since it is larger than the sum of its proper divisors (36174542).

72349078 is a wasteful number, since it uses less digits than its factorization.

72349078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36174541.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 72349078 is about 8505.8261209597. The cubic root of 72349078 is about 416.6880064448.

The spelling of 72349078 in words is "seventy-two million, three hundred forty-nine thousand, seventy-eight".