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2978038252 = 227234798389
BaseRepresentation
bin1011000110000001…
…0100000111101100
321200112201000111001
42301200110013230
522044334211002
61211301410044
7133540623160
oct26140240754
97615630431
102978038252
111299030242
126b1409924
13385c95217
1420372aca0
151266a6a87
hexb18141ec

2978038252 has 48 divisors (see below), whose sum is σ = 6347335680. Its totient is φ = 1194823872.

The previous prime is 2978038249. The next prime is 2978038267. The reversal of 2978038252 is 2528308792.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18927 + ... + 79462.

It is an arithmetic number, because the mean of its divisors is an integer number (132236160).

Almost surely, 22978038252 is an apocalyptic number.

It is an amenable number.

2978038252 is an abundant number, since it is smaller than the sum of its proper divisors (3369297428).

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

2978038252 is a wasteful number, since it uses less digits than its factorization.

2978038252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98470 (or 98468 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2978038252 is about 54571.4050762851. The cubic root of 2978038252 is about 1438.7215781964.

The spelling of 2978038252 in words is "two billion, nine hundred seventy-eight million, thirty-eight thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 23 28 46 47 92 94 161 188 322 329 644 658 1081 1316 2162 4324 7567 15134 30268 98389 196778 393556 688723 1377446 2262947 2754892 4525894 4624283 9051788 9248566 15840629 18497132 31681258 32369981 63362516 64739962 106358509 129479924 212717018 425434036 744509563 1489019126 2978038252