70320272 has 40 divisors (see below), whose sum is σ = 151811712. Its totient is φ = 31280000.

The previous prime is 70320259. The next prime is 70320277. The reversal of 70320272 is 27202307.

It is not an unprimeable number, because it can be changed into a prime (70320277) 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, 4022 + ... + 12522.

Almost surely, 2^70320272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70320272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75905856).

70320272 is an abundant number, since it is smaller than the sum of its proper divisors (81491440).

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

70320272 is a wasteful number, since it uses less digits than its factorization.

70320272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567 (or 8561 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 70320272 is about 8385.7183353604. The cubic root of 70320272 is about 412.7561130055.

Adding to 70320272 its reverse (27202307), we get a palindrome (97522579).

The spelling of 70320272 in words is "seventy million, three hundred twenty thousand, two hundred seventy-two".