70023620 has 24 divisors (see below), whose sum is σ = 147701400. Its totient is φ = 27885312.

The previous prime is 70023587. The next prime is 70023641. The reversal of 70023620 is 2632007.

It can be written as a sum of positive squares in 4 ways, for example, as 25321024 + 44702596 = 5032^2 + 6686^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 70023592 and 70023601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3065 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (6154225).

Almost surely, 2^70023620 is an apocalyptic number.

It is an amenable number.

70023620 is an abundant number, since it is smaller than the sum of its proper divisors (77677780).

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

70023620 is a wasteful number, since it uses less digits than its factorization.

70023620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15527 (or 15525 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 70023620 is about 8368.0117112729. The cubic root of 70023620 is about 412.1748794151.

Adding to 70023620 its reverse (2632007), we get a palindrome (72655627).

The spelling of 70023620 in words is "seventy million, twenty-three thousand, six hundred twenty".