70137444 has 96 divisors (see below), whose sum is σ = 190512000. Its totient is φ = 19888128.

The previous prime is 70137439. The next prime is 70137449. The reversal of 70137444 is 44473107.

It is an interprime number because it is at equal distance from previous prime (70137439) and next prime (70137449).

It is a super-2 number, since 2×70137444² = 9838522101706272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70137449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140307 + ... + 140805.

It is an arithmetic number, because the mean of its divisors is an integer number (1984500).

Almost surely, 2^70137444 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 70137444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95256000).

70137444 is an abundant number, since it is smaller than the sum of its proper divisors (120374556).

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

70137444 is a wasteful number, since it uses less digits than its factorization.

70137444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 70137444 is about 8374.8100873990. The cubic root of 70137444 is about 412.3980897925.

The spelling of 70137444 in words is "seventy million, one hundred thirty-seven thousand, four hundred forty-four".