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139969136 = 246122351
BaseRepresentation
bin10000101011111…
…00001001110000
3100202101011120002
420111330021300
5241313003021
621520005132
73316501166
oct1025741160
9322334502
10139969136
117201097a
123aa607a8
1322cc9298
1414837236
15c44c50b
hex857c270

139969136 has 30 divisors (see below), whose sum is σ = 275826096. Its totient is φ = 68808000.

The previous prime is 139969129. The next prime is 139969153. The reversal of 139969136 is 631969931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58361 + ... + 60711.

Almost surely, 2139969136 is an apocalyptic number.

139969136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139969136 is a deficient number, since it is larger than the sum of its proper divisors (135856960).

139969136 is an equidigital number, since it uses as much as digits as its factorization.

139969136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481 (or 2414 counting only the distinct ones).

The product of its digits is 236196, while the sum is 47.

The square root of 139969136 is about 11830.8552522630. The cubic root of 139969136 is about 519.2112499669.

It can be divided in two parts, 13996 and 9136, that added together give a palindrome (23132).

The spelling of 139969136 in words is "one hundred thirty-nine million, nine hundred sixty-nine thousand, one hundred thirty-six".

Divisors: 1 2 4 8 16 61 122 244 488 976 2351 3721 4702 7442 9404 14884 18808 29768 37616 59536 143411 286822 573644 1147288 2294576 8748071 17496142 34992284 69984568 139969136