70191390 has 16 divisors (see below), whose sum is σ = 168459408. Its totient is φ = 18717696.

The previous prime is 70191389. The next prime is 70191427. The reversal of 70191390 is 9319107.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2339713 = 70191390 / (7 + 0 + 1 + 9 + 1 + 3 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169827 + ... + 1169886.

It is an arithmetic number, because the mean of its divisors is an integer number (10528713).

Almost surely, 2^70191390 is an apocalyptic number.

70191390 is an abundant number, since it is smaller than the sum of its proper divisors (98268018).

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

70191390 is a wasteful number, since it uses less digits than its factorization.

70191390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339723.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 70191390 is about 8378.0301980836. The cubic root of 70191390 is about 412.5037942718.

The spelling of 70191390 in words is "seventy million, one hundred ninety-one thousand, three hundred ninety".