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2920424 = 231328081
BaseRepresentation
bin1011001000111111101000
312111101001212
423020333220
51221423144
6142332252
733552233
oct13107750
95441055
102920424
111715181
12b8a088
137b3380
1456041a
153ca49e
hex2c8fe8

2920424 has 16 divisors (see below), whose sum is σ = 5897220. Its totient is φ = 1347840.

The previous prime is 2920409. The next prime is 2920427. The reversal of 2920424 is 4240292.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 302500 = 1618^2 + 550^2 .

It is an Ulam number.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 2920424.

It is not an unprimeable number, because it can be changed into a prime (2920427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13937 + ... + 14144.

22920424 is an apocalyptic number.

It is an amenable number.

2920424 is an abundant number, since it is smaller than the sum of its proper divisors (2976796).

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

2920424 is a wasteful number, since it uses less digits than its factorization.

2920424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28100 (or 28096 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2920424 is about 1708.9248081762. The cubic root of 2920424 is about 142.9383077818.

The spelling of 2920424 in words is "two million, nine hundred twenty thousand, four hundred twenty-four".

Divisors: 1 2 4 8 13 26 52 104 28081 56162 112324 224648 365053 730106 1460212 2920424