Search a number
-
+
21632734 = 297711071
BaseRepresentation
bin101001010000…
…1011011011110
31111201001112101
41102201123132
521014221414
62051355314
7351606124
oct122413336
944631471
1021632734
1111235aa2
1272b2b3a
134635646
142c31914
151d74a74
hex14a16de

21632734 has 8 divisors (see below), whose sum is σ = 32485248. Its totient is φ = 10804320.

The previous prime is 21632731. The next prime is 21632771. The reversal of 21632734 is 43723612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21632731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (4060656).

Almost surely, 221632734 is an apocalyptic number.

21632734 is a deficient number, since it is larger than the sum of its proper divisors (10852514).

21632734 is a wasteful number, since it uses less digits than its factorization.

21632734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12050.

The product of its digits is 6048, while the sum is 28.

The square root of 21632734 is about 4651.1002999290. The cubic root of 21632734 is about 278.6359421292.

It can be divided in two parts, 21632 and 734, that added together give a triangular number (22366 = T211).

The spelling of 21632734 in words is "twenty-one million, six hundred thirty-two thousand, seven hundred thirty-four".

Divisors: 1 2 977 1954 11071 22142 10816367 21632734