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29950881 = 329344263
BaseRepresentation
bin111001001000…
…0001110100001
32002100122212220
41302100032201
530131412011
62545541253
7512402232
oct162201641
962318786
1029950881
11159a75a4
12a044829
13628881c
143d99089
152969506
hex1c903a1

29950881 has 8 divisors (see below), whose sum is σ = 41311680. Its totient is φ = 19278672.

The previous prime is 29950861. The next prime is 29950913. The reversal of 29950881 is 18805992.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29950881 - 25 = 29950849 is a prime.

It is a super-2 number, since 2×299508812 = 1794110545352322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29950801) 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, 172045 + ... + 172218.

It is an arithmetic number, because the mean of its divisors is an integer number (5163960).

Almost surely, 229950881 is an apocalyptic number.

It is an amenable number.

29950881 is a deficient number, since it is larger than the sum of its proper divisors (11360799).

29950881 is a wasteful number, since it uses less digits than its factorization.

29950881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344295.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 29950881 is about 5472.7398074456. The cubic root of 29950881 is about 310.5535755660.

The spelling of 29950881 in words is "twenty-nine million, nine hundred fifty thousand, eight hundred eighty-one".

Divisors: 1 3 29 87 344263 1032789 9983627 29950881