70259520 has 112 divisors (see below), whose sum is σ = 224942400. Its totient is φ = 18579456.

The previous prime is 70259509. The next prime is 70259533. The reversal of 70259520 is 2595207.

It is a happy number.

It is a super-3 number, since 3×70259520³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156256 + ... + 156704.

Almost surely, 2^70259520 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 70259520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112471200).

70259520 is an abundant number, since it is smaller than the sum of its proper divisors (154682880).

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

70259520 is a wasteful number, since it uses less digits than its factorization.

70259520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 70259520 is about 8382.0952034679. The cubic root of 70259520 is about 412.6372142234.

The spelling of 70259520 in words is "seventy million, two hundred fifty-nine thousand, five hundred twenty".