70773444 has 108 divisors (see below), whose sum is σ = 212314284. Its totient is φ = 19813248.

The previous prime is 70773433. The next prime is 70773449. The reversal of 70773444 is 44437707.

It can be written as a sum of positive squares in 2 ways, for example, as 47444544 + 23328900 = 6888^2 + 4830^2 .

It is a super-2 number, since 2×70773444² = 10017760751242272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 70773399 and 70773408.

It is not an unprimeable number, because it can be changed into a prime (70773449) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 93114 + ... + 93870.

It is an arithmetic number, because the mean of its divisors is an integer number (1965873).

Almost surely, 2^70773444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70773444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106157142).

70773444 is an abundant number, since it is smaller than the sum of its proper divisors (141540840).

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

70773444 is a wasteful number, since it uses less digits than its factorization.

70773444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The square root of 70773444 is about 8412.6954063487. The cubic root of 70773444 is about 413.6408703830.

It can be divided in two parts, 70773 and 444, that added together give a palindrome (71217).

The spelling of 70773444 in words is "seventy million, seven hundred seventy-three thousand, four hundred forty-four".