70253428 has 48 divisors (see below), whose sum is σ = 146361600. Its totient is φ = 28869120.

The previous prime is 70253413. The next prime is 70253437. The reversal of 70253428 is 82435207.

It is a self number, because there is not a number n which added to its sum of digits gives 70253428.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195513 + ... + 195871.

It is an arithmetic number, because the mean of its divisors is an integer number (3049200).

Almost surely, 2^70253428 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 70253428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73180800).

70253428 is an abundant number, since it is smaller than the sum of its proper divisors (76108172).

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

70253428 is a wasteful number, since it uses less digits than its factorization.

70253428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 70253428 is about 8381.7318019607. The cubic root of 70253428 is about 412.6252876851.

The spelling of 70253428 in words is "seventy million, two hundred fifty-three thousand, four hundred twenty-eight".