70390478 has 16 divisors (see below), whose sum is σ = 111642000. Its totient is φ = 33193152.

The previous prime is 70390477. The next prime is 70390483. The reversal of 70390478 is 87409307.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70390477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4658 + ... + 12746.

It is an arithmetic number, because the mean of its divisors is an integer number (6977625).

Almost surely, 2^70390478 is an apocalyptic number.

70390478 is a deficient number, since it is larger than the sum of its proper divisors (41251522).

70390478 is a wasteful number, since it uses less digits than its factorization.

70390478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8339.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 70390478 is about 8389.9033367495. The cubic root of 70390478 is about 412.8934291097.

The spelling of 70390478 in words is "seventy million, three hundred ninety thousand, four hundred seventy-eight".