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40028394225 = 35217157199967
BaseRepresentation
bin100101010001111000…
…001101001011110001
310211022122111010001110
4211101320031023301
51123434232103400
630215551223533
72614640510541
oct452170151361
9124278433043
1040028394225
1115a80a92046
127911517ba9
133a0bc14691
141d1a27d321
151094244e50
hex951e0d2f1

40028394225 has 48 divisors (see below), whose sum is σ = 70519915008. Its totient is φ = 19964605440.

The previous prime is 40028394223. The next prime is 40028394233. The reversal of 40028394225 is 52249382004.

It is not a de Polignac number, because 40028394225 - 21 = 40028394223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40028394223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100192 + ... + 300158.

It is an arithmetic number, because the mean of its divisors is an integer number (1469164896).

It is a narcissistic number, because it is equal to 411 + 011 + 011 + 211 + 811 + 311 + 911 + 411 + 211 + 211 + 511.

Almost surely, 240028394225 is an apocalyptic number.

It is an amenable number.

40028394225 is a deficient number, since it is larger than the sum of its proper divisors (30491520783).

40028394225 is a wasteful number, since it uses less digits than its factorization.

40028394225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200154 (or 200149 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 40028394225 in words is "forty billion, twenty-eight million, three hundred ninety-four thousand, two hundred twenty-five".

Divisors: 1 3 5 15 17 25 51 75 85 157 255 425 471 785 1275 2355 2669 3925 8007 11775 13345 40035 66725 199967 200175 599901 999835 2999505 3399439 4999175 10198317 14997525 16997195 31394819 50991585 84985975 94184457 156974095 254957925 470922285 533711923 784870475 1601135769 2354611425 2668559615 8005678845 13342798075 40028394225