70135400 has 24 divisors (see below), whose sum is σ = 163065270. Its totient is φ = 28054080.

The previous prime is 70135367. The next prime is 70135409. The reversal of 70135400 is 453107.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 38167684 + 31967716 = 6178^2 + 5654^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70135409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175139 + ... + 175538.

Almost surely, 2^70135400 is an apocalyptic number.

It is an amenable number.

70135400 is an abundant number, since it is smaller than the sum of its proper divisors (92929870).

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

70135400 is a wasteful number, since it uses less digits than its factorization.

70135400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350693 (or 350684 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 70135400 is about 8374.6880538919. The cubic root of 70135400 is about 412.3940836115.

Adding to 70135400 its reverse (453107), we get a palindrome (70588507).

The spelling of 70135400 in words is "seventy million, one hundred thirty-five thousand, four hundred".