70440040 has 32 divisors (see below), whose sum is σ = 172899360. Its totient is φ = 25614400.

The previous prime is 70440031. The next prime is 70440047. The reversal of 70440040 is 4004407.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70440047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79606 + ... + 80485.

It is an arithmetic number, because the mean of its divisors is an integer number (5403105).

Almost surely, 2^70440040 is an apocalyptic number.

It is an amenable number.

70440040 is an abundant number, since it is smaller than the sum of its proper divisors (102459320).

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

70440040 is a wasteful number, since it uses less digits than its factorization.

70440040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160113 (or 160109 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 70440040 is about 8392.8564863222. The cubic root of 70440040 is about 412.9903125885.

Adding to 70440040 its reverse (4004407), we get a palindrome (74444447).

The spelling of 70440040 in words is "seventy million, four hundred forty thousand, forty".