70072128 has 140 divisors (see below), whose sum is σ = 237512352. Its totient is φ = 20010240.

The previous prime is 70072111. The next prime is 70072193. The reversal of 70072128 is 82127007.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35323 + ... + 37253.

Almost surely, 2^70072128 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 70072128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118756176).

70072128 is an abundant number, since it is smaller than the sum of its proper divisors (167440224).

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

70072128 is a wasteful number, since it uses less digits than its factorization.

70072128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 70072128 is about 8370.9096279915. The cubic root of 70072128 is about 412.2700338026.

The spelling of 70072128 in words is "seventy million, seventy-two thousand, one hundred twenty-eight".