70009400 has 96 divisors (see below), whose sum is σ = 175770000. Its totient is φ = 25835520.

The previous prime is 70009397. The next prime is 70009403. The reversal of 70009400 is 490007.

70009400 = T₅₁ + T₅₂ + ... + T₇₄₈.

It is an interprime number because it is at equal distance from previous prime (70009397) and next prime (70009403).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70009403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200426 + ... + 200774.

Almost surely, 2^70009400 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 70009400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87885000).

70009400 is an abundant number, since it is smaller than the sum of its proper divisors (105760600).

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

70009400 is a wasteful number, since it uses less digits than its factorization.

70009400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 70009400 is about 8367.1620039294. The cubic root of 70009400 is about 412.1469768132.

Adding to 70009400 its reverse (490007), we get a palindrome (70499407).

The spelling of 70009400 in words is "seventy million, nine thousand, four hundred".