72493786 has 8 divisors (see below), whose sum is σ = 111269664. Its totient is φ = 35403900.

The previous prime is 72493783. The next prime is 72493801. The reversal of 72493786 is 68739427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72493786² = 10510698017227592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72493783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421390 + ... + 421561.

It is an arithmetic number, because the mean of its divisors is an integer number (13908708).

Almost surely, 2^72493786 is an apocalyptic number.

72493786 is a deficient number, since it is larger than the sum of its proper divisors (38775878).

72493786 is a wasteful number, since it uses less digits than its factorization.

72493786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842996.

The product of its digits is 508032, while the sum is 46.

The square root of 72493786 is about 8514.3282764996. The cubic root of 72493786 is about 416.9656323333.

The spelling of 72493786 in words is "seventy-two million, four hundred ninety-three thousand, seven hundred eighty-six".