70770240 has 112 divisors (see below), whose sum is σ = 249692160. Its totient is φ = 18869760.

The previous prime is 70770229. The next prime is 70770247. The reversal of 70770240 is 4207707.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70770247) 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 15 ways as a sum of consecutive naturals, for example, 4545 + ... + 12735.

Almost surely, 2^70770240 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 70770240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124846080).

70770240 is an abundant number, since it is smaller than the sum of its proper divisors (178921920).

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

70770240 is a wasteful number, since it uses less digits than its factorization.

70770240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217 (or 8201 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 70770240 is about 8412.5049777103. The cubic root of 70770240 is about 413.6346282802.

Adding to 70770240 its reverse (4207707), we get a palindrome (74977947).

The spelling of 70770240 in words is "seventy million, seven hundred seventy thousand, two hundred forty".