Search a number
-
+
70330680 = 2334572443
BaseRepresentation
bin1000011000100…
…10100100111000
311220100011120000
410030102210320
5121001040210
610551233000
71512541500
oct414224470
9156304500
1070330680
1136777532
121b678760
13117561b4
1494aaa00
156293ac0
hex4312938

70330680 has 240 divisors, whose sum is σ = 275604120. Its totient is φ = 16039296.

The previous prime is 70330679. The next prime is 70330681. The reversal of 70330680 is 8603307.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70330679) and next prime (70330681).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70330681) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 158539 + ... + 158981.

Almost surely, 270330680 is an apocalyptic number.

70330680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70330680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137802060).

70330680 is an abundant number, since it is smaller than the sum of its proper divisors (205273440).

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

70330680 is a wasteful number, since it uses less digits than its factorization.

70330680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 70330680 is about 8386.3388913160. The cubic root of 70330680 is about 412.7764758093.

Adding to 70330680 its reverse (8603307), we get a palindrome (78933987).

The spelling of 70330680 in words is "seventy million, three hundred thirty thousand, six hundred eighty".