70440720 has 160 divisors (see below), whose sum is σ = 260554752. Its totient is φ = 15392256.

The previous prime is 70440703. The next prime is 70440731. The reversal of 70440720 is 2704407.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37729 + ... + 39551.

Almost surely, 2^70440720 is an apocalyptic number.

70440720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70440720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130277376).

70440720 is an abundant number, since it is smaller than the sum of its proper divisors (190114032).

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

70440720 is a wasteful number, since it uses less digits than its factorization.

70440720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 70440720 is about 8392.8969968659. The cubic root of 70440720 is about 412.9916415320.

The spelling of 70440720 in words is "seventy million, four hundred forty thousand, seven hundred twenty".