70478838 has 48 divisors (see below), whose sum is σ = 162948240. Its totient is φ = 21938688.

The previous prime is 70478827. The next prime is 70478839. The reversal of 70478838 is 83887407.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 70478793 and 70478802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70478839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41706 + ... + 43362.

It is an arithmetic number, because the mean of its divisors is an integer number (3394755).

Almost surely, 2^70478838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70478838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81474120).

70478838 is an abundant number, since it is smaller than the sum of its proper divisors (92469402).

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

70478838 is a wasteful number, since it uses less digits than its factorization.

70478838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 70478838 is about 8395.1675385307. The cubic root of 70478838 is about 413.0661229620.

The spelling of 70478838 in words is "seventy million, four hundred seventy-eight thousand, eight hundred thirty-eight".