70847442 has 24 divisors (see below), whose sum is σ = 155089116. Its totient is φ = 23371776.

The previous prime is 70847419. The next prime is 70847443. The reversal of 70847442 is 24474807.

It can be written as a sum of positive squares in 2 ways, for example, as 70711281 + 136161 = 8409^2 + 369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70847397 and 70847406.

It is not an unprimeable number, because it can be changed into a prime (70847443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18543 + ... + 22034.

Almost surely, 2^70847442 is an apocalyptic number.

70847442 is an abundant number, since it is smaller than the sum of its proper divisors (84241674).

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

70847442 is a wasteful number, since it uses less digits than its factorization.

70847442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40682 (or 40679 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 70847442 is about 8417.0922532666. The cubic root of 70847442 is about 413.7849825145.

It can be divided in two parts, 70847 and 442, that added together give a square (71289 = 267²).

The spelling of 70847442 in words is "seventy million, eight hundred forty-seven thousand, four hundred forty-two".