70021338 has 16 divisors (see below), whose sum is σ = 146131776. Its totient is φ = 22325600.

The previous prime is 70021337. The next prime is 70021363. The reversal of 70021338 is 83312007.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70021333) 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, 253563 + ... + 253838.

It is an arithmetic number, because the mean of its divisors is an integer number (9133236).

Almost surely, 2^70021338 is an apocalyptic number.

70021338 is an abundant number, since it is smaller than the sum of its proper divisors (76110438).

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

70021338 is a wasteful number, since it uses less digits than its factorization.

70021338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507429.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 70021338 is about 8367.8753575803. The cubic root of 70021338 is about 412.1704019102.

The spelling of 70021338 in words is "seventy million, twenty-one thousand, three hundred thirty-eight".