70023072 has 96 divisors (see below), whose sum is σ = 212889600. Its totient is φ = 19738368.

The previous prime is 70023071. The next prime is 70023077. The reversal of 70023072 is 27032007.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×70023072² = 9806461224634368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (70023071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52429 + ... + 53747.

It is an arithmetic number, because the mean of its divisors is an integer number (2217600).

Almost surely, 2^70023072 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 70023072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106444800).

70023072 is an abundant number, since it is smaller than the sum of its proper divisors (142866528).

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

70023072 is a wasteful number, since it uses less digits than its factorization.

70023072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 70023072 is about 8367.9789674688. The cubic root of 70023072 is about 412.1738041949.

Adding to 70023072 its reverse (27032007), we get a palindrome (97055079).

The spelling of 70023072 in words is "seventy million, twenty-three thousand, seventy-two".