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211434140 = 22510798801
BaseRepresentation
bin11001001101000…
…11101010011100
3112201211222010002
430212203222130
5413111343030
632551433432
75145106031
oct1446435234
9481758102
10211434140
11a9392665
125a985878
1334a5b878
142011b388
1513867245
hexc9a3a9c

211434140 has 24 divisors (see below), whose sum is σ = 448165872. Its totient is φ = 83782400.

The previous prime is 211434133. The next prime is 211434163. The reversal of 211434140 is 41434112.

211434140 is nontrivially palindromic in base 16.

211434140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47261 + ... + 51540.

It is an arithmetic number, because the mean of its divisors is an integer number (18673578).

Almost surely, 2211434140 is an apocalyptic number.

211434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211434140 is an abundant number, since it is smaller than the sum of its proper divisors (236731732).

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

211434140 is a wasteful number, since it uses less digits than its factorization.

211434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98917 (or 98915 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 211434140 is about 14540.7750825051. The cubic root of 211434140 is about 595.7422086779.

Adding to 211434140 its reverse (41434112), we get a palindrome (252868252).

The spelling of 211434140 in words is "two hundred eleven million, four hundred thirty-four thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 107 214 428 535 1070 2140 98801 197602 395204 494005 988010 1976020 10571707 21143414 42286828 52858535 105717070 211434140