70481520 has 120 divisors (see below), whose sum is σ = 241297056. Its totient is φ = 18430464.

The previous prime is 70481519. The next prime is 70481527. The reversal of 70481520 is 2518407.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70481527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37237 + ... + 39083.

Almost surely, 2^70481520 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 70481520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120648528).

70481520 is an abundant number, since it is smaller than the sum of its proper divisors (170815536).

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

70481520 is a wasteful number, since it uses less digits than its factorization.

70481520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 70481520 is about 8395.3272717625. The cubic root of 70481520 is about 413.0713624983.

Adding to 70481520 its reverse (2518407), we get a palindrome (72999927).

The spelling of 70481520 in words is "seventy million, four hundred eighty-one thousand, five hundred twenty".