72070870 has 8 divisors (see below), whose sum is σ = 129727584. Its totient is φ = 28828344.

The previous prime is 72070847. The next prime is 72070879. The reversal of 72070870 is 7807027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070879) 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, 3603534 + ... + 3603553.

It is an arithmetic number, because the mean of its divisors is an integer number (16215948).

Almost surely, 2^72070870 is an apocalyptic number.

72070870 is a deficient number, since it is larger than the sum of its proper divisors (57656714).

72070870 is a wasteful number, since it uses less digits than its factorization.

72070870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207094.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 72070870 is about 8489.4564019141. The cubic root of 72070870 is about 416.1532157212.

Adding to 72070870 its reverse (7807027), we get a palindrome (79877897).

The spelling of 72070870 in words is "seventy-two million, seventy thousand, eight hundred seventy".