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48701978 = 21319311317
BaseRepresentation
bin1011100111001…
…0001000011010
310101122022112222
42321302020122
544431430403
64455504042
71130650163
oct271621032
9111568488
1048701978
1125544576
1214388022
13a122650
14667a76a
154420338
hex2e7221a

48701978 has 32 divisors (see below), whose sum is σ = 83341440. Its totient is φ = 21159360.

The previous prime is 48701977. The next prime is 48701981. The reversal of 48701978 is 87910784.

It is a super-2 number, since 2×487019782 = 4743765322224968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48701977) 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, 153476 + ... + 153792.

It is an arithmetic number, because the mean of its divisors is an integer number (2604420).

Almost surely, 248701978 is an apocalyptic number.

48701978 is a deficient number, since it is larger than the sum of its proper divisors (34639462).

48701978 is a wasteful number, since it uses less digits than its factorization.

48701978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 48701978 is about 6978.6802477259. The cubic root of 48701978 is about 365.1871886535.

The spelling of 48701978 in words is "forty-eight million, seven hundred one thousand, nine hundred seventy-eight".

Divisors: 1 2 13 19 26 38 247 311 317 494 622 634 4043 4121 5909 6023 8086 8242 11818 12046 76817 78299 98587 153634 156598 197174 1281631 1873153 2563262 3746306 24350989 48701978