70726172 has 24 divisors (see below), whose sum is σ = 136738560. Its totient is φ = 31739760.

The previous prime is 70726169. The next prime is 70726177. The reversal of 70726172 is 27162707.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70726177) 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, 6698 + ... + 13649.

It is an arithmetic number, because the mean of its divisors is an integer number (5697440).

Almost surely, 2^70726172 is an apocalyptic number.

It is an amenable number.

70726172 is a deficient number, since it is larger than the sum of its proper divisors (66012388).

70726172 is a wasteful number, since it uses less digits than its factorization.

70726172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20441 (or 20439 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 70726172 is about 8409.8853737729. The cubic root of 70726172 is about 413.5487549169.

Adding to 70726172 its reverse (27162707), we get a palindrome (97888879).

The spelling of 70726172 in words is "seventy million, seven hundred twenty-six thousand, one hundred seventy-two".