70138250 has 64 divisors (see below), whose sum is σ = 161650944. Its totient is φ = 22190400.

The previous prime is 70138223. The next prime is 70138267. The reversal of 70138250 is 5283107.

It is a super-2 number, since 2×70138250² = 9838748226125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21209 + ... + 24291.

It is an arithmetic number, because the mean of its divisors is an integer number (2525796).

Almost surely, 2^70138250 is an apocalyptic number.

70138250 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70138250 is an abundant number, since it is smaller than the sum of its proper divisors (91512694).

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

70138250 is a wasteful number, since it uses less digits than its factorization.

70138250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 70138250 is about 8374.8582077549. The cubic root of 70138250 is about 412.3996695078.

The spelling of 70138250 in words is "seventy million, one hundred thirty-eight thousand, two hundred fifty".