70405472 has 24 divisors (see below), whose sum is σ = 138924072. Its totient is φ = 35123200.

The previous prime is 70405463. The next prime is 70405477. The reversal of 70405472 is 27450407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70405477) 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, 13472 + ... + 17952.

It is an arithmetic number, because the mean of its divisors is an integer number (5788503).

Almost surely, 2^70405472 is an apocalyptic number.

It is an amenable number.

70405472 is a deficient number, since it is larger than the sum of its proper divisors (68518600).

70405472 is a wasteful number, since it uses less digits than its factorization.

70405472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 70405472 is about 8390.7968632306. The cubic root of 70405472 is about 412.9227440811.

Adding to 70405472 its reverse (27450407), we get a palindrome (97855879).

The spelling of 70405472 in words is "seventy million, four hundred five thousand, four hundred seventy-two".