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2388748990 = 25673565297
BaseRepresentation
bin1000111001100001…
…0110101010111110
320011110212000120211
42032120112222332
514343004431430
61033011103034
7113124013525
oct21630265276
96143760524
102388748990
111016428521
12567ba1a7a
132c0b79854
141893714bc
15deaa272a
hex8e616abe

2388748990 has 16 divisors (see below), whose sum is σ = 4363924752. Its totient is φ = 941238144.

The previous prime is 2388748979. The next prime is 2388748993. The reversal of 2388748990 is 998478832.

It is a super-2 number, since 2×23887489902 = 11412243474452040200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2388748993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781979 + ... + 1783318.

It is an arithmetic number, because the mean of its divisors is an integer number (272745297).

Almost surely, 22388748990 is an apocalyptic number.

2388748990 is a deficient number, since it is larger than the sum of its proper divisors (1975175762).

2388748990 is a wasteful number, since it uses less digits than its factorization.

2388748990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565371.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The square root of 2388748990 is about 48874.8298206756. The cubic root of 2388748990 is about 1336.7704565384.

The spelling of 2388748990 in words is "two billion, three hundred eighty-eight million, seven hundred forty-eight thousand, nine hundred ninety".

Divisors: 1 2 5 10 67 134 335 670 3565297 7130594 17826485 35652970 238874899 477749798 1194374495 2388748990