70887438 has 24 divisors (see below), whose sum is σ = 156195000. Its totient is φ = 23228304.

The previous prime is 70887413. The next prime is 70887469. The reversal of 70887438 is 83478807.

It is a junction number, because it is equal to n+sod(n) for n = 70887393 and 70887402.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 32313 + ... + 34436.

It is an arithmetic number, because the mean of its divisors is an integer number (6508125).

Almost surely, 2^70887438 is an apocalyptic number.

70887438 is an abundant number, since it is smaller than the sum of its proper divisors (85307562).

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

70887438 is a wasteful number, since it uses less digits than its factorization.

70887438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66816 (or 66813 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 70887438 is about 8419.4677979074. The cubic root of 70887438 is about 413.8628335060.

The spelling of 70887438 in words is "seventy million, eight hundred eighty-seven thousand, four hundred thirty-eight".