72536078 has 4 divisors (see below), whose sum is σ = 108804120. Its totient is φ = 36268038.

The previous prime is 72536077. The next prime is 72536081. The reversal of 72536078 is 87063527.

It is a happy number.

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

It is a super-2 number, since 2×72536078² = 10522965223244168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72536077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18134018 + ... + 18134021.

It is an arithmetic number, because the mean of its divisors is an integer number (27201030).

Almost surely, 2^72536078 is an apocalyptic number.

72536078 is a deficient number, since it is larger than the sum of its proper divisors (36268042).

72536078 is a wasteful number, since it uses less digits than its factorization.

72536078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36268041.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 72536078 is about 8516.8114925716. The cubic root of 72536078 is about 417.0467008101.

It can be divided in two parts, 7253 and 6078, that added together give a palindrome (13331).

The spelling of 72536078 in words is "seventy-two million, five hundred thirty-six thousand, seventy-eight".