70428928 has 36 divisors (see below), whose sum is σ = 142000768. Its totient is φ = 34859520.

The previous prime is 70428923. The next prime is 70428929. The reversal of 70428928 is 82982407.

It is not an unprimeable number, because it can be changed into a prime (70428923) 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, 25033 + ... + 27703.

Almost surely, 2^70428928 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 70428928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71000384).

70428928 is an abundant number, since it is smaller than the sum of its proper divisors (71571840).

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

70428928 is a wasteful number, since it uses less digits than its factorization.

70428928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 70428928 is about 8392.1944686715. The cubic root of 70428928 is about 412.9685948756.

The spelling of 70428928 in words is "seventy million, four hundred twenty-eight thousand, nine hundred twenty-eight".