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47354420 = 2252367721
BaseRepresentation
bin1011010010100…
…1001000110100
310022002212001102
42310221020310
544110320140
64410545232
71113335351
oct264511064
9108085042
1047354420
1124804093
1213a38218
139a70189
146409628
154255e15
hex2d29234

47354420 has 12 divisors (see below), whose sum is σ = 99444324. Its totient is φ = 18941760.

The previous prime is 47354399. The next prime is 47354423. The reversal of 47354420 is 2445374.

It can be written as a sum of positive squares in 2 ways, for example, as 6853924 + 40500496 = 2618^2 + 6364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47354423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183841 + ... + 1183880.

It is an arithmetic number, because the mean of its divisors is an integer number (8287027).

Almost surely, 247354420 is an apocalyptic number.

It is an amenable number.

47354420 is an abundant number, since it is smaller than the sum of its proper divisors (52089904).

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

47354420 is a wasteful number, since it uses less digits than its factorization.

47354420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367730 (or 2367728 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 47354420 is about 6881.4547880517. The cubic root of 47354420 is about 361.7874580307.

Adding to 47354420 its reverse (2445374), we get a palindrome (49799794).

It can be divided in two parts, 47354 and 420, that added together give a palindrome (47774).

The spelling of 47354420 in words is "forty-seven million, three hundred fifty-four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 2367721 4735442 9470884 11838605 23677210 47354420