70618240 has 128 divisors (see below), whose sum is σ = 210625920. Its totient is φ = 21995520.

The previous prime is 70618199. The next prime is 70618241. The reversal of 70618240 is 4281607.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 70618199 and 70618208.

It is not an unprimeable number, because it can be changed into a prime (70618241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48564 + ... + 49996.

It is an arithmetic number, because the mean of its divisors is an integer number (1645515).

Almost surely, 2^70618240 is an apocalyptic number.

70618240 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 70618240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105312960).

70618240 is an abundant number, since it is smaller than the sum of its proper divisors (140007680).

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

70618240 is a wasteful number, since it uses less digits than its factorization.

70618240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 70618240 is about 8403.4659516178. The cubic root of 70618240 is about 413.3382818231.

Adding to 70618240 its reverse (4281607), we get a palindrome (74899847).

The spelling of 70618240 in words is "seventy million, six hundred eighteen thousand, two hundred forty".