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49870420 = 22513917939
BaseRepresentation
bin1011111000111…
…1011001010100
310110211200100121
42332033121110
5100231323140
64540521324
71143614545
oct276173124
9113750317
1049870420
1126172426
1214850244
13a441432
1468a24cc
1545a164a
hex2f8f654

49870420 has 24 divisors (see below), whose sum is σ = 105487200. Its totient is φ = 19803552.

The previous prime is 49870393. The next prime is 49870423. The reversal of 49870420 is 2407894.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49870423) 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, 6190 + ... + 11749.

It is an arithmetic number, because the mean of its divisors is an integer number (4395300).

Almost surely, 249870420 is an apocalyptic number.

It is an amenable number.

49870420 is an abundant number, since it is smaller than the sum of its proper divisors (55616780).

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

49870420 is a wasteful number, since it uses less digits than its factorization.

49870420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18087 (or 18085 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 49870420 is about 7061.8991779832. The cubic root of 49870420 is about 368.0846233399.

The spelling of 49870420 in words is "forty-nine million, eight hundred seventy thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 17939 35878 71756 89695 179390 358780 2493521 4987042 9974084 12467605 24935210 49870420