70238287 has 4 divisors (see below), whose sum is σ = 80272336. Its totient is φ = 60204240.

The previous prime is 70238279. The next prime is 70238291. The reversal of 70238287 is 78283207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78283207 = 1123 ⋅69709.

It is a cyclic number.

It is not a de Polignac number, because 70238287 - 2³ = 70238279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70238387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5017014 + ... + 5017027.

It is an arithmetic number, because the mean of its divisors is an integer number (20068084).

Almost surely, 2^70238287 is an apocalyptic number.

70238287 is a deficient number, since it is larger than the sum of its proper divisors (10034049).

70238287 is a wasteful number, since it uses less digits than its factorization.

70238287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10034048.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 70238287 is about 8380.8285389930. The cubic root of 70238287 is about 412.5956425914.

The spelling of 70238287 in words is "seventy million, two hundred thirty-eight thousand, two hundred eighty-seven".