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2972690420 = 225721233503
BaseRepresentation
bin1011000100101111…
…1010011111110100
321200011122022122012
42301023322133310
522042002043140
61210551023352
7133444310630
oct26113723764
97604568565
102972690420
111296008347
126ab66ab58
13384b4201b
14202b37dc0
15125e9c265
hexb12fa7f4

2972690420 has 24 divisors (see below), whose sum is σ = 7134457344. Its totient is φ = 1019208096.

The previous prime is 2972690417. The next prime is 2972690489. The reversal of 2972690420 is 240962792.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10616612 + ... + 10616891.

It is an arithmetic number, because the mean of its divisors is an integer number (297269056).

Almost surely, 22972690420 is an apocalyptic number.

2972690420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2972690420 is an abundant number, since it is smaller than the sum of its proper divisors (4161766924).

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

2972690420 is a wasteful number, since it uses less digits than its factorization.

2972690420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21233519 (or 21233517 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 2972690420 is about 54522.3845773458. The cubic root of 2972690420 is about 1437.8598642329.

The spelling of 2972690420 in words is "two billion, nine hundred seventy-two million, six hundred ninety thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 21233503 42467006 84934012 106167515 148634521 212335030 297269042 424670060 594538084 743172605 1486345210 2972690420