70533240 has 64 divisors (see below), whose sum is σ = 212176800. Its totient is φ = 18757632.

The previous prime is 70533233. The next prime is 70533241. The reversal of 70533240 is 4233507.

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

It is a self number, because there is not a number n which added to its sum of digits gives 70533240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70533241) 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, 67764 + ... + 68796.

Almost surely, 2^70533240 is an apocalyptic number.

It is an amenable number.

70533240 is an abundant number, since it is smaller than the sum of its proper divisors (141643560).

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

70533240 is a wasteful number, since it uses less digits than its factorization.

70533240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 70533240 is about 8398.4069918051. The cubic root of 70533240 is about 413.1723763398.

Adding to 70533240 its reverse (4233507), we get a palindrome (74766747).

The spelling of 70533240 in words is "seventy million, five hundred thirty-three thousand, two hundred forty".