70403418 has 48 divisors (see below), whose sum is σ = 163328256. Its totient is φ = 22705920.

The previous prime is 70403413. The next prime is 70403423. The reversal of 70403418 is 81430407.

It is an interprime number because it is at equal distance from previous prime (70403413) and next prime (70403423).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 70403391 and 70403400.

It is not an unprimeable number, because it can be changed into a prime (70403413) 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 23 ways as a sum of consecutive naturals, for example, 12730 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (3402672).

Almost surely, 2^70403418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70403418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81664128).

70403418 is an abundant number, since it is smaller than the sum of its proper divisors (92924838).

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

70403418 is a wasteful number, since it uses less digits than its factorization.

70403418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721 (or 4709 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 70403418 is about 8390.6744663346. The cubic root of 70403418 is about 412.9187285241.

The spelling of 70403418 in words is "seventy million, four hundred three thousand, four hundred eighteen".