70400080 has 20 divisors (see below), whose sum is σ = 163680372. Its totient is φ = 28160000.

The previous prime is 70400069. The next prime is 70400087. The reversal of 70400080 is 8000407.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51494976 + 18905104 = 7176^2 + 4348^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70400087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439921 + ... + 440080.

Almost surely, 2^70400080 is an apocalyptic number.

It is an amenable number.

70400080 is an abundant number, since it is smaller than the sum of its proper divisors (93280292).

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

70400080 is a wasteful number, since it uses less digits than its factorization.

70400080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880014 (or 880008 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 70400080 is about 8390.4755526728. The cubic root of 70400080 is about 412.9122025886.

Adding to 70400080 its reverse (8000407), we get a palindrome (78400487).

The spelling of 70400080 in words is "seventy million, four hundred thousand, eighty".