70236440 has 16 divisors (see below), whose sum is σ = 158032080. Its totient is φ = 28094560.

The previous prime is 70236433. The next prime is 70236473. The reversal of 70236440 is 4463207.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 877916 + ... + 877995.

It is an arithmetic number, because the mean of its divisors is an integer number (9877005).

Almost surely, 2^70236440 is an apocalyptic number.

It is an amenable number.

70236440 is an abundant number, since it is smaller than the sum of its proper divisors (87795640).

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

70236440 is a wasteful number, since it uses less digits than its factorization.

70236440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755922 (or 1755918 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 70236440 is about 8380.7183462994. The cubic root of 70236440 is about 412.5920259940.

Adding to 70236440 its reverse (4463207), we get a palindrome (74699647).

The spelling of 70236440 in words is "seventy million, two hundred thirty-six thousand, four hundred forty".