70440480 has 144 divisors (see below), whose sum is σ = 262289664. Its totient is φ = 17072640.

The previous prime is 70440479. The next prime is 70440497. The reversal of 70440480 is 8404407.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×70440480² = 9923722445260800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13617 + ... + 18063.

It is an arithmetic number, because the mean of its divisors is an integer number (1821456).

Almost surely, 2^70440480 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 70440480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131144832).

70440480 is an abundant number, since it is smaller than the sum of its proper divisors (191849184).

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

70440480 is a wasteful number, since it uses less digits than its factorization.

70440480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479 (or 4468 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 70440480 is about 8392.8826990492. The cubic root of 70440480 is about 412.9911724941.

Adding to 70440480 its reverse (8404407), we get a palindrome (78844887).

The spelling of 70440480 in words is "seventy million, four hundred forty thousand, four hundred eighty".