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215214342 = 2375124151
BaseRepresentation
bin11001101001111…
…10100100000110
3112222222000120120
430310332210012
5420043324332
633204442410
75222202030
oct1464764406
9488860516
10215214342
111005347a2
12600a9406
1335783385
1420822c50
1513d6232c
hexcd3e906

215214342 has 16 divisors (see below), whose sum is σ = 491918592. Its totient is φ = 61489800.

The previous prime is 215214341. The next prime is 215214347. The reversal of 215214342 is 243412512.

215214342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215214341) 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, 2562034 + ... + 2562117.

It is an arithmetic number, because the mean of its divisors is an integer number (30744912).

Almost surely, 2215214342 is an apocalyptic number.

215214342 is an abundant number, since it is smaller than the sum of its proper divisors (276704250).

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

215214342 is a wasteful number, since it uses less digits than its factorization.

215214342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124163.

The product of its digits is 1920, while the sum is 24.

The square root of 215214342 is about 14670.1854794000. The cubic root of 215214342 is about 599.2716551028.

Adding to 215214342 its reverse (243412512), we get a palindrome (458626854).

The spelling of 215214342 in words is "two hundred fifteen million, two hundred fourteen thousand, three hundred forty-two".

Divisors: 1 2 3 6 7 14 21 42 5124151 10248302 15372453 30744906 35869057 71738114 107607171 215214342