70230240 has 120 divisors (see below), whose sum is σ = 247899960. Its totient is φ = 18724608.

The previous prime is 70230239. The next prime is 70230263. The reversal of 70230240 is 4203207.

It is a happy number.

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

It is a super-2 number, since 2×70230240² = 9864573220915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 10251 + ... + 15669.

It is an arithmetic number, because the mean of its divisors is an integer number (2065833).

Almost surely, 2^70230240 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 70230240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123949980).

70230240 is an abundant number, since it is smaller than the sum of its proper divisors (177669720).

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

70230240 is a wasteful number, since it uses less digits than its factorization.

70230240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 70230240 is about 8380.3484414432. The cubic root of 70230240 is about 412.5798853547.

Adding to 70230240 its reverse (4203207), we get a palindrome (74433447).

The spelling of 70230240 in words is "seventy million, two hundred thirty thousand, two hundred forty".