70206140 has 24 divisors (see below), whose sum is σ = 155193360. Its totient is φ = 26604288.

The previous prime is 70206119. The next prime is 70206167. The reversal of 70206140 is 4160207.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 91997 + ... + 92756.

It is an arithmetic number, because the mean of its divisors is an integer number (6466390).

Almost surely, 2^70206140 is an apocalyptic number.

It is an amenable number.

70206140 is an abundant number, since it is smaller than the sum of its proper divisors (84987220).

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

70206140 is a wasteful number, since it uses less digits than its factorization.

70206140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184781 (or 184779 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 70206140 is about 8378.9104303603. The cubic root of 70206140 is about 412.5326867272.

Adding to 70206140 its reverse (4160207), we get a palindrome (74366347).

The spelling of 70206140 in words is "seventy million, two hundred six thousand, one hundred forty".