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48780040 = 2351219501
BaseRepresentation
bin1011101000010…
…1001100001000
310101210021122011
42322011030020
544441430130
64501305304
71131423601
oct272051410
9111707564
1048780040
1125598191
1214405234
13a14c03a
14669ada8
15443852a
hex2e85308

48780040 has 16 divisors (see below), whose sum is σ = 109755180. Its totient is φ = 19512000.

The previous prime is 48779999. The next prime is 48780041. The reversal of 48780040 is 4008784.

It can be written as a sum of positive squares in 2 ways, for example, as 43480836 + 5299204 = 6594^2 + 2302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 48779984 and 48780011.

It is not an unprimeable number, because it can be changed into a prime (48780041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609711 + ... + 609790.

Almost surely, 248780040 is an apocalyptic number.

48780040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

48780040 is an abundant number, since it is smaller than the sum of its proper divisors (60975140).

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

48780040 is a wasteful number, since it uses less digits than its factorization.

48780040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219512 (or 1219508 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 48780040 is about 6984.2708996716. The cubic root of 48780040 is about 365.3821980151.

The spelling of 48780040 in words is "forty-eight million, seven hundred eighty thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 1219501 2439002 4878004 6097505 9756008 12195010 24390020 48780040