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70190240 = 2551932273
BaseRepresentation
bin1000010111100…
…00010010100000
311220002000220112
410023300102200
5120432041430
610544230452
71511415161
oct413602240
9156060815
1070190240
1136690a6a
121b60b428
13117072b3
149471768
156267195
hex42f04a0

70190240 has 48 divisors (see below), whose sum is σ = 166756968. Its totient is φ = 27918336.

The previous prime is 70190213. The next prime is 70190243. The reversal of 70190240 is 4209107.

It can be written as a sum of positive squares in 4 ways, for example, as 60777616 + 9412624 = 7796^2 + 3068^2 .

It is not an unprimeable number, because it can be changed into a prime (70190243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29744 + ... + 32016.

Almost surely, 270190240 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 70190240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83378484).

70190240 is an abundant number, since it is smaller than the sum of its proper divisors (96566728).

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

70190240 is a wasteful number, since it uses less digits than its factorization.

70190240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 70190240 is about 8377.9615659180. The cubic root of 70190240 is about 412.5015414696.

Adding to 70190240 its reverse (4209107), we get a palindrome (74399347).

The spelling of 70190240 in words is "seventy million, one hundred ninety thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 193 386 772 965 1544 1930 2273 3088 3860 4546 6176 7720 9092 11365 15440 18184 22730 30880 36368 45460 72736 90920 181840 363680 438689 877378 1754756 2193445 3509512 4386890 7019024 8773780 14038048 17547560 35095120 70190240