72946143 has 8 divisors (see below), whose sum is σ = 108068400. Its totient is φ = 48630744.

The previous prime is 72946141. The next prime is 72946177. The reversal of 72946143 is 34164927.

It is not a de Polignac number, because 72946143 - 2¹ = 72946141 is a prime.

It is a super-2 number, since 2×72946143² = 10642279557152898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72946098 and 72946107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72946141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350828 + ... + 1350881.

It is an arithmetic number, because the mean of its divisors is an integer number (13508550).

Almost surely, 2^72946143 is an apocalyptic number.

72946143 is a deficient number, since it is larger than the sum of its proper divisors (35122257).

72946143 is a wasteful number, since it uses less digits than its factorization.

72946143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701718 (or 2701712 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 72946143 is about 8540.8514212577. The cubic root of 72946143 is about 417.8311150502.

The spelling of 72946143 in words is "seventy-two million, nine hundred forty-six thousand, one hundred forty-three".