Search a number
-
+
70070191380 = 2232572315431567
BaseRepresentation
bin100000101000010000…
…0100100010100010100
320200212022102112100100
41001100200210110110
52122000432111010
652104555214100
75030255541150
oct1012040442424
9220768375310
1070070191380
1127797883982
12116b6447330
1367b8b52307
14356a088060
151c518782c0
hex1050824514

70070191380 has 288 divisors, whose sum is σ = 253797433344. Its totient is φ = 15299995392.

The previous prime is 70070191327. The next prime is 70070191391. The reversal of 70070191380 is 8319107007.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44715357 + ... + 44716923.

It is an arithmetic number, because the mean of its divisors is an integer number (881241088).

Almost surely, 270070191380 is an apocalyptic number.

70070191380 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 70070191380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126898716672).

70070191380 is an abundant number, since it is smaller than the sum of its proper divisors (183727241964).

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

70070191380 is a wasteful number, since it uses less digits than its factorization.

70070191380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3150 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

Adding to 70070191380 its reverse (8319107007), we get a palindrome (78389298387).

The spelling of 70070191380 in words is "seventy billion, seventy million, one hundred ninety-one thousand, three hundred eighty".