70205040 has 120 divisors (see below), whose sum is σ = 237292848. Its totient is φ = 18600960.

The previous prime is 70204973. The next prime is 70205059. The reversal of 70205040 is 4050207.

It is a happy number.

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

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202147 + ... + 202493.

Almost surely, 2^70205040 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 70205040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118646424).

70205040 is an abundant number, since it is smaller than the sum of its proper divisors (167087808).

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

70205040 is a wasteful number, since it uses less digits than its factorization.

70205040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 70205040 is about 8378.8447891103. The cubic root of 70205040 is about 412.5305321753.

Adding to 70205040 its reverse (4050207), we get a palindrome (74255247).

The spelling of 70205040 in words is "seventy million, two hundred five thousand, forty".