70230021 has 8 divisors (see below), whose sum is σ = 93720000. Its totient is φ = 46780032.

The previous prime is 70229993. The next prime is 70230029. The reversal of 70230021 is 12003207.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70230021 - 2⁷ = 70229893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70230029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5625 + ... + 13118.

It is an arithmetic number, because the mean of its divisors is an integer number (11715000).

Almost surely, 2^70230021 is an apocalyptic number.

It is an amenable number.

70230021 is a deficient number, since it is larger than the sum of its proper divisors (23489979).

70230021 is a wasteful number, since it uses less digits than its factorization.

70230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19995.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 70230021 is about 8380.3353751506. The cubic root of 70230021 is about 412.5794565030.

Adding to 70230021 its reverse (12003207), we get a palindrome (82233228).

The spelling of 70230021 in words is "seventy million, two hundred thirty thousand, twenty-one".