72070183 has 4 divisors (see below), whose sum is σ = 73085328. Its totient is φ = 71055040.

The previous prime is 72070181. The next prime is 72070213. The reversal of 72070183 is 38107027.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72070183 - 2¹ = 72070181 is a prime.

It is a super-2 number, since 2×72070183² = 10388222555306978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507466 + ... + 507607.

It is an arithmetic number, because the mean of its divisors is an integer number (18271332).

Almost surely, 2^72070183 is an apocalyptic number.

72070183 is a deficient number, since it is larger than the sum of its proper divisors (1015145).

72070183 is a wasteful number, since it uses less digits than its factorization.

72070183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015144.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 72070183 is about 8489.4159398630. The cubic root of 72070183 is about 416.1518934201.

The spelling of 72070183 in words is "seventy-two million, seventy thousand, one hundred eighty-three".