72947046 has 8 divisors (see below), whose sum is σ = 145894104. Its totient is φ = 24315680.

The previous prime is 72947041. The next prime is 72947047. The reversal of 72947046 is 64074927.

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

72947046 is an admirable number.

It is a super-2 number, since 2×72947046² = 10642543040252232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72946995 and 72947013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72947041) 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, 6078915 + ... + 6078926.

It is an arithmetic number, because the mean of its divisors is an integer number (18236763).

Almost surely, 2^72947046 is an apocalyptic number.

72947046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72947046 is a wasteful number, since it uses less digits than its factorization.

72947046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12157846.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 72947046 is about 8540.9042846762. The cubic root of 72947046 is about 417.8328391529.

The spelling of 72947046 in words is "seventy-two million, nine hundred forty-seven thousand, forty-six".