70026780 has 144 divisors (see below), whose sum is σ = 214298784. Its totient is φ = 17072640.

The previous prime is 70026773. The next prime is 70026787. The reversal of 70026780 is 8762007.

It is an interprime number because it is at equal distance from previous prime (70026773) and next prime (70026787).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70026787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1147950 + ... + 1148010.

It is an arithmetic number, because the mean of its divisors is an integer number (1488186).

Almost surely, 2^70026780 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 70026780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107149392).

70026780 is an abundant number, since it is smaller than the sum of its proper divisors (144272004).

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

70026780 is a wasteful number, since it uses less digits than its factorization.

70026780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 70026780 is about 8368.2005234100. The cubic root of 70026780 is about 412.1810794803.

Adding to 70026780 its reverse (8762007), we get a palindrome (78788787).

The spelling of 70026780 in words is "seventy million, twenty-six thousand, seven hundred eighty".