[go: up one dir, main page]

Search a number
-
+
68572070 = 2572139943
BaseRepresentation
bin1000001011001…
…01001110100110
311210000211012022
410011211032212
5120023301240
610445423142
71461565400
oct405451646
9153024168
1068572070
1135786236
121ab6aab2
131128b8b8
14916db70
1560479b5
hex41653a6

68572070 has 24 divisors (see below), whose sum is σ = 143582544. Its totient is φ = 23510256.

The previous prime is 68572061. The next prime is 68572087. The reversal of 68572070 is 7027586.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 68572070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69482 + ... + 70461.

It is an arithmetic number, because the mean of its divisors is an integer number (5982606).

Almost surely, 268572070 is an apocalyptic number.

68572070 is an abundant number, since it is smaller than the sum of its proper divisors (75010474).

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

68572070 is a wasteful number, since it uses less digits than its factorization.

68572070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139964 (or 139957 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 68572070 is about 8280.8254419472. The cubic root of 68572070 is about 409.3069194713.

The spelling of 68572070 in words is "sixty-eight million, five hundred seventy-two thousand, seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 139943 279886 699715 979601 1399430 1959202 4898005 6857207 9796010 13714414 34286035 68572070