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52253740 = 22571133931
BaseRepresentation
bin1100011101010…
…1010000101100
310122022202122201
43013111100230
5101334104430
65103551244
71203102160
oct307252054
9118282581
1052253740
1127550010
12155bb524
13aa97196
146d22ca0
1548c28ca
hex31d542c

52253740 has 48 divisors (see below), whose sum is σ = 136813824. Its totient is φ = 16286400.

The previous prime is 52253687. The next prime is 52253749. The reversal of 52253740 is 4735225.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 52253699 and 52253708.

It is not an unprimeable number, because it can be changed into a prime (52253749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15426 + ... + 18505.

It is an arithmetic number, because the mean of its divisors is an integer number (2850288).

Almost surely, 252253740 is an apocalyptic number.

It is an amenable number.

52253740 is an abundant number, since it is smaller than the sum of its proper divisors (84560084).

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

52253740 is a wasteful number, since it uses less digits than its factorization.

52253740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33958 (or 33956 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 52253740 is about 7228.6748439807. The cubic root of 52253740 is about 373.8572381621.

Adding to 52253740 its reverse (4735225), we get a palindrome (56988965).

The spelling of 52253740 in words is "fifty-two million, two hundred fifty-three thousand, seven hundred forty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 33931 67862 135724 169655 237517 339310 373241 475034 678620 746482 950068 1187585 1492964 1866205 2375170 2612687 3732410 4750340 5225374 7464820 10450748 13063435 26126870 52253740